1 /* Renesas / SuperH SH specific support for 32-bit ELF
2 Copyright (C) 1996-2023 Free Software Foundation, Inc.
3 Contributed by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
27 #include "elf-vxworks.h"
30 #include "libiberty.h"
31 #include "../opcodes/sh-opc.h"
33 /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */
34 #define OCTETS_PER_BYTE(ABFD, SEC) 1
36 static bfd_reloc_status_type sh_elf_reloc
37 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
38 static bfd_reloc_status_type sh_elf_ignore_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bool sh_elf_relax_delete_bytes
41 (bfd
*, asection
*, bfd_vma
, int);
42 static bool sh_elf_align_loads
43 (bfd
*, asection
*, Elf_Internal_Rela
*, bfd_byte
*, bool *);
44 static bool sh_elf_swap_insns
45 (bfd
*, asection
*, void *, bfd_byte
*, bfd_vma
);
46 static int sh_elf_optimized_tls_reloc
47 (struct bfd_link_info
*, int, int);
48 static bfd_vma dtpoff_base
49 (struct bfd_link_info
*);
51 (struct bfd_link_info
*, bfd_vma
);
53 /* The name of the dynamic interpreter. This is put in the .interp
56 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
58 /* FDPIC binaries have a default 128K stack. */
59 #define DEFAULT_STACK_SIZE 0x20000
61 #define MINUS_ONE ((bfd_vma) 0 - 1)
63 /* Decide whether a reference to a symbol can be resolved locally or
64 not. If the symbol is protected, we want the local address, but
65 its function descriptor must be assigned by the dynamic linker. */
66 #define SYMBOL_FUNCDESC_LOCAL(INFO, H) \
67 (SYMBOL_REFERENCES_LOCAL (INFO, H) \
68 || ! elf_hash_table (INFO)->dynamic_sections_created)
70 #define SH_PARTIAL32 true
71 #define SH_SRC_MASK32 0xffffffff
72 #define SH_ELF_RELOC sh_elf_reloc
73 static reloc_howto_type sh_elf_howto_table
[] =
75 #include "elf32-sh-relocs.h"
78 #define SH_PARTIAL32 false
79 #define SH_SRC_MASK32 0
80 #define SH_ELF_RELOC bfd_elf_generic_reloc
81 static reloc_howto_type sh_vxworks_howto_table
[] =
83 #include "elf32-sh-relocs.h"
86 /* Return true if OUTPUT_BFD is a VxWorks object. */
89 vxworks_object_p (bfd
*abfd ATTRIBUTE_UNUSED
)
91 #if !defined SH_TARGET_ALREADY_DEFINED
92 extern const bfd_target sh_elf32_vxworks_le_vec
;
93 extern const bfd_target sh_elf32_vxworks_vec
;
95 return (abfd
->xvec
== &sh_elf32_vxworks_le_vec
96 || abfd
->xvec
== &sh_elf32_vxworks_vec
);
102 /* Return true if OUTPUT_BFD is an FDPIC object. */
105 fdpic_object_p (bfd
*abfd ATTRIBUTE_UNUSED
)
107 #if !defined SH_TARGET_ALREADY_DEFINED
108 extern const bfd_target sh_elf32_fdpic_le_vec
;
109 extern const bfd_target sh_elf32_fdpic_be_vec
;
111 return (abfd
->xvec
== &sh_elf32_fdpic_le_vec
112 || abfd
->xvec
== &sh_elf32_fdpic_be_vec
);
118 /* Return the howto table for ABFD. */
120 static reloc_howto_type
*
121 get_howto_table (bfd
*abfd
)
123 if (vxworks_object_p (abfd
))
124 return sh_vxworks_howto_table
;
125 return sh_elf_howto_table
;
128 static bfd_reloc_status_type
129 sh_elf_reloc_loop (int r_type ATTRIBUTE_UNUSED
, bfd
*input_bfd
,
130 asection
*input_section
, bfd_byte
*contents
,
131 bfd_vma addr
, asection
*symbol_section
,
132 bfd_vma start
, bfd_vma end
)
134 static bfd_vma last_addr
;
135 static asection
*last_symbol_section
;
136 bfd_byte
*start_ptr
, *ptr
, *last_ptr
;
141 /* Sanity check the address. */
142 if (addr
> bfd_get_section_limit (input_bfd
, input_section
))
143 return bfd_reloc_outofrange
;
145 /* We require the start and end relocations to be processed consecutively -
146 although we allow then to be processed forwards or backwards. */
150 last_symbol_section
= symbol_section
;
153 if (last_addr
!= addr
)
157 if (! symbol_section
|| last_symbol_section
!= symbol_section
|| end
< start
)
158 return bfd_reloc_outofrange
;
160 /* Get the symbol_section contents. */
161 if (symbol_section
!= input_section
)
163 if (elf_section_data (symbol_section
)->this_hdr
.contents
!= NULL
)
164 contents
= elf_section_data (symbol_section
)->this_hdr
.contents
;
167 if (!bfd_malloc_and_get_section (input_bfd
, symbol_section
,
171 return bfd_reloc_outofrange
;
175 #define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800)
176 start_ptr
= contents
+ start
;
177 for (cum_diff
= -6, ptr
= contents
+ end
; cum_diff
< 0 && ptr
> start_ptr
;)
179 for (last_ptr
= ptr
, ptr
-= 4; ptr
>= start_ptr
&& IS_PPI (ptr
);)
182 diff
= (last_ptr
- ptr
) >> 1;
183 cum_diff
+= diff
& 1;
186 /* Calculate the start / end values to load into rs / re minus four -
187 so that will cancel out the four we would otherwise have to add to
188 addr to get the value to subtract in order to get relative addressing. */
192 end
= (ptr
+ cum_diff
* 2) - contents
;
196 bfd_vma start0
= start
- 4;
198 while (start0
&& IS_PPI (contents
+ start0
))
200 start0
= start
- 2 - ((start
- start0
) & 2);
201 start
= start0
- cum_diff
- 2;
205 if (elf_section_data (symbol_section
)->this_hdr
.contents
!= contents
)
208 insn
= bfd_get_16 (input_bfd
, contents
+ addr
);
210 x
= (insn
& 0x200 ? end
: start
) - addr
;
211 if (input_section
!= symbol_section
)
212 x
+= ((symbol_section
->output_section
->vma
+ symbol_section
->output_offset
)
213 - (input_section
->output_section
->vma
214 + input_section
->output_offset
));
216 if (x
< -128 || x
> 127)
217 return bfd_reloc_overflow
;
219 x
= (insn
& ~0xff) | (x
& 0xff);
220 bfd_put_16 (input_bfd
, (bfd_vma
) x
, contents
+ addr
);
225 /* This function is used for normal relocs. This used to be like the COFF
226 function, and is almost certainly incorrect for other ELF targets. */
228 static bfd_reloc_status_type
229 sh_elf_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol_in
,
230 void *data
, asection
*input_section
, bfd
*output_bfd
,
231 char **error_message ATTRIBUTE_UNUSED
)
235 enum elf_sh_reloc_type r_type
;
236 bfd_vma addr
= reloc_entry
->address
;
237 bfd_size_type octets
= addr
* OCTETS_PER_BYTE (abfd
, input_section
);
238 bfd_byte
*hit_data
= (bfd_byte
*) data
+ octets
;
240 r_type
= (enum elf_sh_reloc_type
) reloc_entry
->howto
->type
;
242 if (output_bfd
!= NULL
)
244 /* Partial linking--do nothing. */
245 reloc_entry
->address
+= input_section
->output_offset
;
249 /* Almost all relocs have to do with relaxing. If any work must be
250 done for them, it has been done in sh_relax_section. */
251 if (r_type
== R_SH_IND12W
&& (symbol_in
->flags
& BSF_LOCAL
) != 0)
254 if (symbol_in
!= NULL
255 && bfd_is_und_section (symbol_in
->section
))
256 return bfd_reloc_undefined
;
258 /* PR 17512: file: 9891ca98. */
259 if (octets
+ bfd_get_reloc_size (reloc_entry
->howto
)
260 > bfd_get_section_limit_octets (abfd
, input_section
))
261 return bfd_reloc_outofrange
;
263 if (bfd_is_com_section (symbol_in
->section
))
266 sym_value
= (symbol_in
->value
+
267 symbol_in
->section
->output_section
->vma
+
268 symbol_in
->section
->output_offset
);
273 insn
= bfd_get_32 (abfd
, hit_data
);
274 insn
+= sym_value
+ reloc_entry
->addend
;
275 bfd_put_32 (abfd
, insn
, hit_data
);
278 insn
= bfd_get_16 (abfd
, hit_data
);
279 sym_value
+= reloc_entry
->addend
;
280 sym_value
-= (input_section
->output_section
->vma
281 + input_section
->output_offset
284 sym_value
+= (((insn
& 0xfff) ^ 0x800) - 0x800) << 1;
285 insn
= (insn
& 0xf000) | ((sym_value
>> 1) & 0xfff);
286 bfd_put_16 (abfd
, insn
, hit_data
);
287 if (sym_value
+ 0x1000 >= 0x2000 || (sym_value
& 1) != 0)
288 return bfd_reloc_overflow
;
298 /* This function is used for relocs which are only used for relaxing,
299 which the linker should otherwise ignore. */
301 static bfd_reloc_status_type
302 sh_elf_ignore_reloc (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*reloc_entry
,
303 asymbol
*symbol ATTRIBUTE_UNUSED
,
304 void *data ATTRIBUTE_UNUSED
, asection
*input_section
,
306 char **error_message ATTRIBUTE_UNUSED
)
308 if (output_bfd
!= NULL
)
309 reloc_entry
->address
+= input_section
->output_offset
;
313 /* This structure is used to map BFD reloc codes to SH ELF relocs. */
317 bfd_reloc_code_real_type bfd_reloc_val
;
318 unsigned char elf_reloc_val
;
321 /* An array mapping BFD reloc codes to SH ELF relocs. */
323 static const struct elf_reloc_map sh_reloc_map
[] =
325 { BFD_RELOC_NONE
, R_SH_NONE
},
326 { BFD_RELOC_32
, R_SH_DIR32
},
327 { BFD_RELOC_16
, R_SH_DIR16
},
328 { BFD_RELOC_8
, R_SH_DIR8
},
329 { BFD_RELOC_CTOR
, R_SH_DIR32
},
330 { BFD_RELOC_32_PCREL
, R_SH_REL32
},
331 { BFD_RELOC_SH_PCDISP8BY2
, R_SH_DIR8WPN
},
332 { BFD_RELOC_SH_PCDISP12BY2
, R_SH_IND12W
},
333 { BFD_RELOC_SH_PCRELIMM8BY2
, R_SH_DIR8WPZ
},
334 { BFD_RELOC_SH_PCRELIMM8BY4
, R_SH_DIR8WPL
},
335 { BFD_RELOC_8_PCREL
, R_SH_SWITCH8
},
336 { BFD_RELOC_SH_SWITCH16
, R_SH_SWITCH16
},
337 { BFD_RELOC_SH_SWITCH32
, R_SH_SWITCH32
},
338 { BFD_RELOC_SH_USES
, R_SH_USES
},
339 { BFD_RELOC_SH_COUNT
, R_SH_COUNT
},
340 { BFD_RELOC_SH_ALIGN
, R_SH_ALIGN
},
341 { BFD_RELOC_SH_CODE
, R_SH_CODE
},
342 { BFD_RELOC_SH_DATA
, R_SH_DATA
},
343 { BFD_RELOC_SH_LABEL
, R_SH_LABEL
},
344 { BFD_RELOC_VTABLE_INHERIT
, R_SH_GNU_VTINHERIT
},
345 { BFD_RELOC_VTABLE_ENTRY
, R_SH_GNU_VTENTRY
},
346 { BFD_RELOC_SH_LOOP_START
, R_SH_LOOP_START
},
347 { BFD_RELOC_SH_LOOP_END
, R_SH_LOOP_END
},
348 { BFD_RELOC_SH_TLS_GD_32
, R_SH_TLS_GD_32
},
349 { BFD_RELOC_SH_TLS_LD_32
, R_SH_TLS_LD_32
},
350 { BFD_RELOC_SH_TLS_LDO_32
, R_SH_TLS_LDO_32
},
351 { BFD_RELOC_SH_TLS_IE_32
, R_SH_TLS_IE_32
},
352 { BFD_RELOC_SH_TLS_LE_32
, R_SH_TLS_LE_32
},
353 { BFD_RELOC_SH_TLS_DTPMOD32
, R_SH_TLS_DTPMOD32
},
354 { BFD_RELOC_SH_TLS_DTPOFF32
, R_SH_TLS_DTPOFF32
},
355 { BFD_RELOC_SH_TLS_TPOFF32
, R_SH_TLS_TPOFF32
},
356 { BFD_RELOC_32_GOT_PCREL
, R_SH_GOT32
},
357 { BFD_RELOC_32_PLT_PCREL
, R_SH_PLT32
},
358 { BFD_RELOC_SH_COPY
, R_SH_COPY
},
359 { BFD_RELOC_SH_GLOB_DAT
, R_SH_GLOB_DAT
},
360 { BFD_RELOC_SH_JMP_SLOT
, R_SH_JMP_SLOT
},
361 { BFD_RELOC_SH_RELATIVE
, R_SH_RELATIVE
},
362 { BFD_RELOC_32_GOTOFF
, R_SH_GOTOFF
},
363 { BFD_RELOC_SH_GOTPC
, R_SH_GOTPC
},
364 { BFD_RELOC_SH_GOTPLT32
, R_SH_GOTPLT32
},
365 { BFD_RELOC_SH_GOT20
, R_SH_GOT20
},
366 { BFD_RELOC_SH_GOTOFF20
, R_SH_GOTOFF20
},
367 { BFD_RELOC_SH_GOTFUNCDESC
, R_SH_GOTFUNCDESC
},
368 { BFD_RELOC_SH_GOTFUNCDESC20
, R_SH_GOTFUNCDESC20
},
369 { BFD_RELOC_SH_GOTOFFFUNCDESC
, R_SH_GOTOFFFUNCDESC
},
370 { BFD_RELOC_SH_GOTOFFFUNCDESC20
, R_SH_GOTOFFFUNCDESC20
},
371 { BFD_RELOC_SH_FUNCDESC
, R_SH_FUNCDESC
},
374 /* Given a BFD reloc code, return the howto structure for the
375 corresponding SH ELF reloc. */
377 static reloc_howto_type
*
378 sh_elf_reloc_type_lookup (bfd
*abfd
, bfd_reloc_code_real_type code
)
382 for (i
= 0; i
< sizeof (sh_reloc_map
) / sizeof (struct elf_reloc_map
); i
++)
384 if (sh_reloc_map
[i
].bfd_reloc_val
== code
)
385 return get_howto_table (abfd
) + (int) sh_reloc_map
[i
].elf_reloc_val
;
391 static reloc_howto_type
*
392 sh_elf_reloc_name_lookup (bfd
*abfd
, const char *r_name
)
396 if (vxworks_object_p (abfd
))
399 i
< (sizeof (sh_vxworks_howto_table
)
400 / sizeof (sh_vxworks_howto_table
[0]));
402 if (sh_vxworks_howto_table
[i
].name
!= NULL
403 && strcasecmp (sh_vxworks_howto_table
[i
].name
, r_name
) == 0)
404 return &sh_vxworks_howto_table
[i
];
409 i
< (sizeof (sh_elf_howto_table
)
410 / sizeof (sh_elf_howto_table
[0]));
412 if (sh_elf_howto_table
[i
].name
!= NULL
413 && strcasecmp (sh_elf_howto_table
[i
].name
, r_name
) == 0)
414 return &sh_elf_howto_table
[i
];
420 /* Given an ELF reloc, fill in the howto field of a relent. */
423 sh_elf_info_to_howto (bfd
*abfd
, arelent
*cache_ptr
, Elf_Internal_Rela
*dst
)
427 r
= ELF32_R_TYPE (dst
->r_info
);
429 if (r
>= R_SH_FIRST_INVALID_RELOC_6
430 || (r
>= R_SH_FIRST_INVALID_RELOC
&& r
<= R_SH_LAST_INVALID_RELOC
)
431 || (r
>= R_SH_FIRST_INVALID_RELOC_2
&& r
<= R_SH_LAST_INVALID_RELOC_2
)
432 || (r
>= R_SH_FIRST_INVALID_RELOC_3
&& r
<= R_SH_LAST_INVALID_RELOC_3
)
433 || (r
>= R_SH_FIRST_INVALID_RELOC_4
&& r
<= R_SH_LAST_INVALID_RELOC_4
)
434 || (r
>= R_SH_FIRST_INVALID_RELOC_5
&& r
<= R_SH_LAST_INVALID_RELOC_5
))
436 /* xgettext:c-format */
437 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
439 bfd_set_error (bfd_error_bad_value
);
443 cache_ptr
->howto
= get_howto_table (abfd
) + r
;
447 /* This function handles relaxing for SH ELF. See the corresponding
448 function in coff-sh.c for a description of what this does. FIXME:
449 There is a lot of duplication here between this code and the COFF
450 specific code. The format of relocs and symbols is wound deeply
451 into this code, but it would still be better if the duplication
452 could be eliminated somehow. Note in particular that although both
453 functions use symbols like R_SH_CODE, those symbols have different
454 values; in coff-sh.c they come from include/coff/sh.h, whereas here
455 they come from enum elf_sh_reloc_type in include/elf/sh.h. */
458 sh_elf_relax_section (bfd
*abfd
, asection
*sec
,
459 struct bfd_link_info
*link_info
, bool *again
)
461 Elf_Internal_Shdr
*symtab_hdr
;
462 Elf_Internal_Rela
*internal_relocs
;
464 Elf_Internal_Rela
*irel
, *irelend
;
465 bfd_byte
*contents
= NULL
;
466 Elf_Internal_Sym
*isymbuf
= NULL
;
470 if (bfd_link_relocatable (link_info
)
471 || (sec
->flags
& SEC_HAS_CONTENTS
) == 0
472 || (sec
->flags
& SEC_RELOC
) == 0
473 || sec
->reloc_count
== 0)
476 symtab_hdr
= &elf_symtab_hdr (abfd
);
478 internal_relocs
= (_bfd_elf_link_read_relocs
479 (abfd
, sec
, NULL
, (Elf_Internal_Rela
*) NULL
,
480 link_info
->keep_memory
));
481 if (internal_relocs
== NULL
)
486 irelend
= internal_relocs
+ sec
->reloc_count
;
487 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
489 bfd_vma laddr
, paddr
, symval
;
491 Elf_Internal_Rela
*irelfn
, *irelscan
, *irelcount
;
494 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_CODE
)
497 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_SH_USES
)
500 /* Get the section contents. */
501 if (contents
== NULL
)
503 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
504 contents
= elf_section_data (sec
)->this_hdr
.contents
;
507 if (!bfd_malloc_and_get_section (abfd
, sec
, &contents
))
512 /* The r_addend field of the R_SH_USES reloc will point us to
513 the register load. The 4 is because the r_addend field is
514 computed as though it were a jump offset, which are based
515 from 4 bytes after the jump instruction. */
516 laddr
= irel
->r_offset
+ 4 + irel
->r_addend
;
517 if (laddr
>= sec
->size
)
519 /* xgettext:c-format */
521 (_("%pB: %#" PRIx64
": warning: bad R_SH_USES offset"),
522 abfd
, (uint64_t) irel
->r_offset
);
525 insn
= bfd_get_16 (abfd
, contents
+ laddr
);
527 /* If the instruction is not mov.l NN,rN, we don't know what to
529 if ((insn
& 0xf000) != 0xd000)
532 /* xgettext:c-format */
533 (_("%pB: %#" PRIx64
": warning: "
534 "R_SH_USES points to unrecognized insn 0x%x"),
535 abfd
, (uint64_t) irel
->r_offset
, insn
);
539 /* Get the address from which the register is being loaded. The
540 displacement in the mov.l instruction is quadrupled. It is a
541 displacement from four bytes after the movl instruction, but,
542 before adding in the PC address, two least significant bits
543 of the PC are cleared. We assume that the section is aligned
544 on a four byte boundary. */
547 paddr
+= (laddr
+ 4) &~ (bfd_vma
) 3;
548 if (paddr
>= sec
->size
)
551 /* xgettext:c-format */
552 (_("%pB: %#" PRIx64
": warning: bad R_SH_USES load offset"),
553 abfd
, (uint64_t) irel
->r_offset
);
557 /* Get the reloc for the address from which the register is
558 being loaded. This reloc will tell us which function is
559 actually being called. */
560 for (irelfn
= internal_relocs
; irelfn
< irelend
; irelfn
++)
561 if (irelfn
->r_offset
== paddr
562 && ELF32_R_TYPE (irelfn
->r_info
) == (int) R_SH_DIR32
)
564 if (irelfn
>= irelend
)
567 /* xgettext:c-format */
568 (_("%pB: %#" PRIx64
": warning: could not find expected reloc"),
569 abfd
, (uint64_t) paddr
);
573 /* Read this BFD's symbols if we haven't done so already. */
574 if (isymbuf
== NULL
&& symtab_hdr
->sh_info
!= 0)
576 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
578 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
579 symtab_hdr
->sh_info
, 0,
585 /* Get the value of the symbol referred to by the reloc. */
586 if (ELF32_R_SYM (irelfn
->r_info
) < symtab_hdr
->sh_info
)
588 /* A local symbol. */
589 Elf_Internal_Sym
*isym
;
591 isym
= isymbuf
+ ELF32_R_SYM (irelfn
->r_info
);
593 != (unsigned int) _bfd_elf_section_from_bfd_section (abfd
, sec
))
596 /* xgettext:c-format */
597 (_("%pB: %#" PRIx64
": warning: symbol in unexpected section"),
598 abfd
, (uint64_t) paddr
);
602 symval
= (isym
->st_value
603 + sec
->output_section
->vma
604 + sec
->output_offset
);
609 struct elf_link_hash_entry
*h
;
611 indx
= ELF32_R_SYM (irelfn
->r_info
) - symtab_hdr
->sh_info
;
612 h
= elf_sym_hashes (abfd
)[indx
];
613 BFD_ASSERT (h
!= NULL
);
614 if (h
->root
.type
!= bfd_link_hash_defined
615 && h
->root
.type
!= bfd_link_hash_defweak
)
617 /* This appears to be a reference to an undefined
618 symbol. Just ignore it--it will be caught by the
619 regular reloc processing. */
623 symval
= (h
->root
.u
.def
.value
624 + h
->root
.u
.def
.section
->output_section
->vma
625 + h
->root
.u
.def
.section
->output_offset
);
628 if (get_howto_table (abfd
)[R_SH_DIR32
].partial_inplace
)
629 symval
+= bfd_get_32 (abfd
, contents
+ paddr
);
631 symval
+= irelfn
->r_addend
;
633 /* See if this function call can be shortened. */
636 + sec
->output_section
->vma
639 /* A branch to an address beyond ours might be increased by an
640 .align that doesn't move when bytes behind us are deleted.
641 So, we add some slop in this calculation to allow for
643 if (foff
< -0x1000 || foff
>= 0x1000 - 8)
645 /* After all that work, we can't shorten this function call. */
649 /* Shorten the function call. */
651 /* For simplicity of coding, we are going to modify the section
652 contents, the section relocs, and the BFD symbol table. We
653 must tell the rest of the code not to free up this
654 information. It would be possible to instead create a table
655 of changes which have to be made, as is done in coff-mips.c;
656 that would be more work, but would require less memory when
657 the linker is run. */
659 elf_section_data (sec
)->relocs
= internal_relocs
;
660 elf_section_data (sec
)->this_hdr
.contents
= contents
;
661 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
663 /* Replace the jmp/jsr with a bra/bsr. */
665 /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and
666 replace the jmp/jsr with a bra/bsr. */
667 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irelfn
->r_info
), R_SH_IND12W
);
668 /* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
669 here, but that only checks if the symbol is an external symbol,
670 not if the symbol is in a different section. Besides, we need
671 a consistent meaning for the relocation, so we just assume here that
672 the value of the symbol is not available. */
674 /* We can't fully resolve this yet, because the external
675 symbol value may be changed by future relaxing. We let
676 the final link phase handle it. */
677 if (bfd_get_16 (abfd
, contents
+ irel
->r_offset
) & 0x0020)
678 bfd_put_16 (abfd
, (bfd_vma
) 0xa000, contents
+ irel
->r_offset
);
680 bfd_put_16 (abfd
, (bfd_vma
) 0xb000, contents
+ irel
->r_offset
);
684 /* When we calculated the symbol "value" we had an offset in the
685 DIR32's word in memory (we read and add it above). However,
686 the jsr we create does NOT have this offset encoded, so we
687 have to add it to the addend to preserve it. */
688 irel
->r_addend
+= bfd_get_32 (abfd
, contents
+ paddr
);
690 /* See if there is another R_SH_USES reloc referring to the same
692 for (irelscan
= internal_relocs
; irelscan
< irelend
; irelscan
++)
693 if (ELF32_R_TYPE (irelscan
->r_info
) == (int) R_SH_USES
694 && laddr
== irelscan
->r_offset
+ 4 + irelscan
->r_addend
)
696 if (irelscan
< irelend
)
698 /* Some other function call depends upon this register load,
699 and we have not yet converted that function call.
700 Indeed, we may never be able to convert it. There is
701 nothing else we can do at this point. */
705 /* Look for a R_SH_COUNT reloc on the location where the
706 function address is stored. Do this before deleting any
707 bytes, to avoid confusion about the address. */
708 for (irelcount
= internal_relocs
; irelcount
< irelend
; irelcount
++)
709 if (irelcount
->r_offset
== paddr
710 && ELF32_R_TYPE (irelcount
->r_info
) == (int) R_SH_COUNT
)
713 /* Delete the register load. */
714 if (! sh_elf_relax_delete_bytes (abfd
, sec
, laddr
, 2))
717 /* That will change things, so, just in case it permits some
718 other function call to come within range, we should relax
719 again. Note that this is not required, and it may be slow. */
722 /* Now check whether we got a COUNT reloc. */
723 if (irelcount
>= irelend
)
726 /* xgettext:c-format */
727 (_("%pB: %#" PRIx64
": warning: "
728 "could not find expected COUNT reloc"),
729 abfd
, (uint64_t) paddr
);
733 /* The number of uses is stored in the r_addend field. We've
735 if (irelcount
->r_addend
== 0)
737 /* xgettext:c-format */
738 _bfd_error_handler (_("%pB: %#" PRIx64
": warning: bad count"),
739 abfd
, (uint64_t) paddr
);
743 --irelcount
->r_addend
;
745 /* If there are no more uses, we can delete the address. Reload
746 the address from irelfn, in case it was changed by the
747 previous call to sh_elf_relax_delete_bytes. */
748 if (irelcount
->r_addend
== 0)
750 if (! sh_elf_relax_delete_bytes (abfd
, sec
, irelfn
->r_offset
, 4))
754 /* We've done all we can with that function call. */
757 /* Look for load and store instructions that we can align on four
759 if ((elf_elfheader (abfd
)->e_flags
& EF_SH_MACH_MASK
) != EF_SH4
764 /* Get the section contents. */
765 if (contents
== NULL
)
767 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
768 contents
= elf_section_data (sec
)->this_hdr
.contents
;
771 if (!bfd_malloc_and_get_section (abfd
, sec
, &contents
))
776 if (! sh_elf_align_loads (abfd
, sec
, internal_relocs
, contents
,
782 elf_section_data (sec
)->relocs
= internal_relocs
;
783 elf_section_data (sec
)->this_hdr
.contents
= contents
;
784 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
789 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
791 if (! link_info
->keep_memory
)
795 /* Cache the symbols for elf_link_input_bfd. */
796 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
801 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
803 if (! link_info
->keep_memory
)
807 /* Cache the section contents for elf_link_input_bfd. */
808 elf_section_data (sec
)->this_hdr
.contents
= contents
;
812 if (elf_section_data (sec
)->relocs
!= internal_relocs
)
813 free (internal_relocs
);
818 if (symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
820 if (elf_section_data (sec
)->this_hdr
.contents
!= contents
)
822 if (elf_section_data (sec
)->relocs
!= internal_relocs
)
823 free (internal_relocs
);
828 /* Delete some bytes from a section while relaxing. FIXME: There is a
829 lot of duplication between this function and sh_relax_delete_bytes
833 sh_elf_relax_delete_bytes (bfd
*abfd
, asection
*sec
, bfd_vma addr
,
836 Elf_Internal_Shdr
*symtab_hdr
;
837 unsigned int sec_shndx
;
839 Elf_Internal_Rela
*irel
, *irelend
;
840 Elf_Internal_Rela
*irelalign
;
842 Elf_Internal_Sym
*isymbuf
, *isym
, *isymend
;
843 struct elf_link_hash_entry
**sym_hashes
;
844 struct elf_link_hash_entry
**end_hashes
;
845 unsigned int symcount
;
848 symtab_hdr
= &elf_symtab_hdr (abfd
);
849 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
851 sec_shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
853 contents
= elf_section_data (sec
)->this_hdr
.contents
;
855 /* The deletion must stop at the next ALIGN reloc for an alignment
856 power larger than the number of bytes we are deleting. */
861 irel
= elf_section_data (sec
)->relocs
;
862 irelend
= irel
+ sec
->reloc_count
;
863 for (; irel
< irelend
; irel
++)
865 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_ALIGN
866 && irel
->r_offset
> addr
867 && count
< (1 << irel
->r_addend
))
870 toaddr
= irel
->r_offset
;
875 /* Actually delete the bytes. */
876 memmove (contents
+ addr
, contents
+ addr
+ count
,
877 (size_t) (toaddr
- addr
- count
));
878 if (irelalign
== NULL
)
884 #define NOP_OPCODE (0x0009)
886 BFD_ASSERT ((count
& 1) == 0);
887 for (i
= 0; i
< count
; i
+= 2)
888 bfd_put_16 (abfd
, (bfd_vma
) NOP_OPCODE
, contents
+ toaddr
- count
+ i
);
891 /* Adjust all the relocs. */
892 for (irel
= elf_section_data (sec
)->relocs
; irel
< irelend
; irel
++)
894 bfd_vma nraddr
, stop
;
897 int off
, adjust
, oinsn
;
898 bfd_signed_vma voff
= 0;
901 /* Get the new reloc address. */
902 nraddr
= irel
->r_offset
;
903 if ((irel
->r_offset
> addr
904 && irel
->r_offset
< toaddr
)
905 || (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_ALIGN
906 && irel
->r_offset
== toaddr
))
909 /* See if this reloc was for the bytes we have deleted, in which
910 case we no longer care about it. Don't delete relocs which
911 represent addresses, though. */
912 if (irel
->r_offset
>= addr
913 && irel
->r_offset
< addr
+ count
914 && ELF32_R_TYPE (irel
->r_info
) != (int) R_SH_ALIGN
915 && ELF32_R_TYPE (irel
->r_info
) != (int) R_SH_CODE
916 && ELF32_R_TYPE (irel
->r_info
) != (int) R_SH_DATA
917 && ELF32_R_TYPE (irel
->r_info
) != (int) R_SH_LABEL
)
918 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
921 /* If this is a PC relative reloc, see if the range it covers
922 includes the bytes we have deleted. */
923 switch ((enum elf_sh_reloc_type
) ELF32_R_TYPE (irel
->r_info
))
932 start
= irel
->r_offset
;
933 insn
= bfd_get_16 (abfd
, contents
+ nraddr
);
937 switch ((enum elf_sh_reloc_type
) ELF32_R_TYPE (irel
->r_info
))
944 /* If this reloc is against a symbol defined in this
945 section, and the symbol will not be adjusted below, we
946 must check the addend to see it will put the value in
947 range to be adjusted, and hence must be changed. */
948 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
950 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
951 if (isym
->st_shndx
== sec_shndx
952 && (isym
->st_value
<= addr
953 || isym
->st_value
>= toaddr
))
957 if (get_howto_table (abfd
)[R_SH_DIR32
].partial_inplace
)
959 val
= bfd_get_32 (abfd
, contents
+ nraddr
);
960 val
+= isym
->st_value
;
961 if (val
> addr
&& val
< toaddr
)
962 bfd_put_32 (abfd
, val
- count
, contents
+ nraddr
);
966 val
= isym
->st_value
+ irel
->r_addend
;
967 if (val
> addr
&& val
< toaddr
)
968 irel
->r_addend
-= count
;
979 stop
= (bfd_vma
) ((bfd_signed_vma
) start
+ 4 + off
* 2);
986 /* This has been made by previous relaxation. Since the
987 relocation will be against an external symbol, the
988 final relocation will just do the right thing. */
995 stop
= (bfd_vma
) ((bfd_signed_vma
) start
+ 4 + off
* 2);
997 /* The addend will be against the section symbol, thus
998 for adjusting the addend, the relevant start is the
999 start of the section.
1000 N.B. If we want to abandon in-place changes here and
1001 test directly using symbol + addend, we have to take into
1002 account that the addend has already been adjusted by -4. */
1003 if (stop
> addr
&& stop
< toaddr
)
1004 irel
->r_addend
-= count
;
1010 stop
= start
+ 4 + off
* 2;
1015 stop
= (start
& ~(bfd_vma
) 3) + 4 + off
* 4;
1021 /* These relocs types represent
1023 The r_addend field holds the difference between the reloc
1024 address and L1. That is the start of the reloc, and
1025 adding in the contents gives us the top. We must adjust
1026 both the r_offset field and the section contents.
1027 N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset,
1028 and the elf bfd r_offset is called r_vaddr. */
1030 stop
= irel
->r_offset
;
1031 start
= (bfd_vma
) ((bfd_signed_vma
) stop
- (long) irel
->r_addend
);
1035 && (stop
<= addr
|| stop
>= toaddr
))
1036 irel
->r_addend
+= count
;
1037 else if (stop
> addr
1039 && (start
<= addr
|| start
>= toaddr
))
1040 irel
->r_addend
-= count
;
1042 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_SWITCH16
)
1043 voff
= bfd_get_signed_16 (abfd
, contents
+ nraddr
);
1044 else if (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_SWITCH8
)
1045 voff
= bfd_get_8 (abfd
, contents
+ nraddr
);
1047 voff
= bfd_get_signed_32 (abfd
, contents
+ nraddr
);
1048 stop
= (bfd_vma
) ((bfd_signed_vma
) start
+ voff
);
1053 start
= irel
->r_offset
;
1054 stop
= (bfd_vma
) ((bfd_signed_vma
) start
1055 + (long) irel
->r_addend
1062 && (stop
<= addr
|| stop
>= toaddr
))
1064 else if (stop
> addr
1066 && (start
<= addr
|| start
>= toaddr
))
1075 switch ((enum elf_sh_reloc_type
) ELF32_R_TYPE (irel
->r_info
))
1084 if ((oinsn
& 0xff00) != (insn
& 0xff00))
1086 bfd_put_16 (abfd
, (bfd_vma
) insn
, contents
+ nraddr
);
1091 if ((oinsn
& 0xf000) != (insn
& 0xf000))
1093 bfd_put_16 (abfd
, (bfd_vma
) insn
, contents
+ nraddr
);
1097 BFD_ASSERT (adjust
== count
|| count
>= 4);
1102 if ((irel
->r_offset
& 3) == 0)
1105 if ((oinsn
& 0xff00) != (insn
& 0xff00))
1107 bfd_put_16 (abfd
, (bfd_vma
) insn
, contents
+ nraddr
);
1112 if (voff
< 0 || voff
>= 0xff)
1114 bfd_put_8 (abfd
, voff
, contents
+ nraddr
);
1119 if (voff
< - 0x8000 || voff
>= 0x8000)
1121 bfd_put_signed_16 (abfd
, (bfd_vma
) voff
, contents
+ nraddr
);
1126 bfd_put_signed_32 (abfd
, (bfd_vma
) voff
, contents
+ nraddr
);
1130 irel
->r_addend
+= adjust
;
1137 /* xgettext:c-format */
1138 (_("%pB: %#" PRIx64
": fatal: reloc overflow while relaxing"),
1139 abfd
, (uint64_t) irel
->r_offset
);
1140 bfd_set_error (bfd_error_bad_value
);
1145 irel
->r_offset
= nraddr
;
1148 /* Look through all the other sections. If there contain any IMM32
1149 relocs against internal symbols which we are not going to adjust
1150 below, we may need to adjust the addends. */
1151 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
1153 Elf_Internal_Rela
*internal_relocs
;
1154 Elf_Internal_Rela
*irelscan
, *irelscanend
;
1155 bfd_byte
*ocontents
;
1158 || (o
->flags
& SEC_HAS_CONTENTS
) == 0
1159 || (o
->flags
& SEC_RELOC
) == 0
1160 || o
->reloc_count
== 0)
1163 /* We always cache the relocs. Perhaps, if info->keep_memory is
1164 FALSE, we should free them, if we are permitted to, when we
1165 leave sh_coff_relax_section. */
1166 internal_relocs
= (_bfd_elf_link_read_relocs
1167 (abfd
, o
, NULL
, (Elf_Internal_Rela
*) NULL
, true));
1168 if (internal_relocs
== NULL
)
1172 irelscanend
= internal_relocs
+ o
->reloc_count
;
1173 for (irelscan
= internal_relocs
; irelscan
< irelscanend
; irelscan
++)
1175 /* Dwarf line numbers use R_SH_SWITCH32 relocs. */
1176 if (ELF32_R_TYPE (irelscan
->r_info
) == (int) R_SH_SWITCH32
)
1178 bfd_vma start
, stop
;
1179 bfd_signed_vma voff
;
1181 if (ocontents
== NULL
)
1183 if (elf_section_data (o
)->this_hdr
.contents
!= NULL
)
1184 ocontents
= elf_section_data (o
)->this_hdr
.contents
;
1187 /* We always cache the section contents.
1188 Perhaps, if info->keep_memory is FALSE, we
1189 should free them, if we are permitted to,
1190 when we leave sh_coff_relax_section. */
1191 if (!bfd_malloc_and_get_section (abfd
, o
, &ocontents
))
1197 elf_section_data (o
)->this_hdr
.contents
= ocontents
;
1201 stop
= irelscan
->r_offset
;
1203 = (bfd_vma
) ((bfd_signed_vma
) stop
- (long) irelscan
->r_addend
);
1205 /* STOP is in a different section, so it won't change. */
1206 if (start
> addr
&& start
< toaddr
)
1207 irelscan
->r_addend
+= count
;
1209 voff
= bfd_get_signed_32 (abfd
, ocontents
+ irelscan
->r_offset
);
1210 stop
= (bfd_vma
) ((bfd_signed_vma
) start
+ voff
);
1214 && (stop
<= addr
|| stop
>= toaddr
))
1215 bfd_put_signed_32 (abfd
, (bfd_vma
) voff
+ count
,
1216 ocontents
+ irelscan
->r_offset
);
1217 else if (stop
> addr
1219 && (start
<= addr
|| start
>= toaddr
))
1220 bfd_put_signed_32 (abfd
, (bfd_vma
) voff
- count
,
1221 ocontents
+ irelscan
->r_offset
);
1224 if (ELF32_R_TYPE (irelscan
->r_info
) != (int) R_SH_DIR32
)
1227 if (ELF32_R_SYM (irelscan
->r_info
) >= symtab_hdr
->sh_info
)
1231 isym
= isymbuf
+ ELF32_R_SYM (irelscan
->r_info
);
1232 if (isym
->st_shndx
== sec_shndx
1233 && (isym
->st_value
<= addr
1234 || isym
->st_value
>= toaddr
))
1238 if (ocontents
== NULL
)
1240 if (elf_section_data (o
)->this_hdr
.contents
!= NULL
)
1241 ocontents
= elf_section_data (o
)->this_hdr
.contents
;
1244 /* We always cache the section contents.
1245 Perhaps, if info->keep_memory is FALSE, we
1246 should free them, if we are permitted to,
1247 when we leave sh_coff_relax_section. */
1248 if (!bfd_malloc_and_get_section (abfd
, o
, &ocontents
))
1254 elf_section_data (o
)->this_hdr
.contents
= ocontents
;
1258 val
= bfd_get_32 (abfd
, ocontents
+ irelscan
->r_offset
);
1259 val
+= isym
->st_value
;
1260 if (val
> addr
&& val
< toaddr
)
1261 bfd_put_32 (abfd
, val
- count
,
1262 ocontents
+ irelscan
->r_offset
);
1267 /* Adjust the local symbols defined in this section. */
1268 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
1269 for (isym
= isymbuf
; isym
< isymend
; isym
++)
1271 if (isym
->st_shndx
== sec_shndx
1272 && isym
->st_value
> addr
1273 && isym
->st_value
< toaddr
)
1274 isym
->st_value
-= count
;
1277 /* Now adjust the global symbols defined in this section. */
1278 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
1279 - symtab_hdr
->sh_info
);
1280 sym_hashes
= elf_sym_hashes (abfd
);
1281 end_hashes
= sym_hashes
+ symcount
;
1282 for (; sym_hashes
< end_hashes
; sym_hashes
++)
1284 struct elf_link_hash_entry
*sym_hash
= *sym_hashes
;
1285 if ((sym_hash
->root
.type
== bfd_link_hash_defined
1286 || sym_hash
->root
.type
== bfd_link_hash_defweak
)
1287 && sym_hash
->root
.u
.def
.section
== sec
1288 && sym_hash
->root
.u
.def
.value
> addr
1289 && sym_hash
->root
.u
.def
.value
< toaddr
)
1291 sym_hash
->root
.u
.def
.value
-= count
;
1295 /* See if we can move the ALIGN reloc forward. We have adjusted
1296 r_offset for it already. */
1297 if (irelalign
!= NULL
)
1299 bfd_vma alignto
, alignaddr
;
1301 alignto
= BFD_ALIGN (toaddr
, 1 << irelalign
->r_addend
);
1302 alignaddr
= BFD_ALIGN (irelalign
->r_offset
,
1303 1 << irelalign
->r_addend
);
1304 if (alignto
!= alignaddr
)
1306 /* Tail recursion. */
1307 return sh_elf_relax_delete_bytes (abfd
, sec
, alignaddr
,
1308 (int) (alignto
- alignaddr
));
1315 /* Look for loads and stores which we can align to four byte
1316 boundaries. This is like sh_align_loads in coff-sh.c. */
1319 sh_elf_align_loads (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
,
1320 Elf_Internal_Rela
*internal_relocs
,
1321 bfd_byte
*contents ATTRIBUTE_UNUSED
,
1324 Elf_Internal_Rela
*irel
, *irelend
;
1325 bfd_vma
*labels
= NULL
;
1326 bfd_vma
*label
, *label_end
;
1331 irelend
= internal_relocs
+ sec
->reloc_count
;
1333 /* Get all the addresses with labels on them. */
1334 amt
= sec
->reloc_count
;
1335 amt
*= sizeof (bfd_vma
);
1336 labels
= (bfd_vma
*) bfd_malloc (amt
);
1340 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
1342 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_LABEL
)
1344 *label_end
= irel
->r_offset
;
1349 /* Note that the assembler currently always outputs relocs in
1350 address order. If that ever changes, this code will need to sort
1351 the label values and the relocs. */
1355 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
1357 bfd_vma start
, stop
;
1359 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_SH_CODE
)
1362 start
= irel
->r_offset
;
1364 for (irel
++; irel
< irelend
; irel
++)
1365 if (ELF32_R_TYPE (irel
->r_info
) == (int) R_SH_DATA
)
1368 stop
= irel
->r_offset
;
1372 if (! _bfd_sh_align_load_span (abfd
, sec
, contents
, sh_elf_swap_insns
,
1373 internal_relocs
, &label
,
1374 label_end
, start
, stop
, pswapped
))
1387 /* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */
1390 sh_elf_swap_insns (bfd
*abfd
, asection
*sec
, void *relocs
,
1391 bfd_byte
*contents
, bfd_vma addr
)
1393 Elf_Internal_Rela
*internal_relocs
= (Elf_Internal_Rela
*) relocs
;
1394 unsigned short i1
, i2
;
1395 Elf_Internal_Rela
*irel
, *irelend
;
1397 /* Swap the instructions themselves. */
1398 i1
= bfd_get_16 (abfd
, contents
+ addr
);
1399 i2
= bfd_get_16 (abfd
, contents
+ addr
+ 2);
1400 bfd_put_16 (abfd
, (bfd_vma
) i2
, contents
+ addr
);
1401 bfd_put_16 (abfd
, (bfd_vma
) i1
, contents
+ addr
+ 2);
1403 /* Adjust all reloc addresses. */
1404 irelend
= internal_relocs
+ sec
->reloc_count
;
1405 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
1407 enum elf_sh_reloc_type type
;
1410 /* There are a few special types of relocs that we don't want to
1411 adjust. These relocs do not apply to the instruction itself,
1412 but are only associated with the address. */
1413 type
= (enum elf_sh_reloc_type
) ELF32_R_TYPE (irel
->r_info
);
1414 if (type
== R_SH_ALIGN
1415 || type
== R_SH_CODE
1416 || type
== R_SH_DATA
1417 || type
== R_SH_LABEL
)
1420 /* If an R_SH_USES reloc points to one of the addresses being
1421 swapped, we must adjust it. It would be incorrect to do this
1422 for a jump, though, since we want to execute both
1423 instructions after the jump. (We have avoided swapping
1424 around a label, so the jump will not wind up executing an
1425 instruction it shouldn't). */
1426 if (type
== R_SH_USES
)
1430 off
= irel
->r_offset
+ 4 + irel
->r_addend
;
1432 irel
->r_offset
+= 2;
1433 else if (off
== addr
+ 2)
1434 irel
->r_offset
-= 2;
1437 if (irel
->r_offset
== addr
)
1439 irel
->r_offset
+= 2;
1442 else if (irel
->r_offset
== addr
+ 2)
1444 irel
->r_offset
-= 2;
1453 unsigned short insn
, oinsn
;
1456 loc
= contents
+ irel
->r_offset
;
1465 insn
= bfd_get_16 (abfd
, loc
);
1468 if ((oinsn
& 0xff00) != (insn
& 0xff00))
1470 bfd_put_16 (abfd
, (bfd_vma
) insn
, loc
);
1474 insn
= bfd_get_16 (abfd
, loc
);
1477 if ((oinsn
& 0xf000) != (insn
& 0xf000))
1479 bfd_put_16 (abfd
, (bfd_vma
) insn
, loc
);
1483 /* This reloc ignores the least significant 3 bits of
1484 the program counter before adding in the offset.
1485 This means that if ADDR is at an even address, the
1486 swap will not affect the offset. If ADDR is an at an
1487 odd address, then the instruction will be crossing a
1488 four byte boundary, and must be adjusted. */
1489 if ((addr
& 3) != 0)
1491 insn
= bfd_get_16 (abfd
, loc
);
1494 if ((oinsn
& 0xff00) != (insn
& 0xff00))
1496 bfd_put_16 (abfd
, (bfd_vma
) insn
, loc
);
1505 /* xgettext:c-format */
1506 (_("%pB: %#" PRIx64
": fatal: reloc overflow while relaxing"),
1507 abfd
, (uint64_t) irel
->r_offset
);
1508 bfd_set_error (bfd_error_bad_value
);
1517 /* Describes one of the various PLT styles. */
1519 struct elf_sh_plt_info
1521 /* The template for the first PLT entry, or NULL if there is no special
1523 const bfd_byte
*plt0_entry
;
1525 /* The size of PLT0_ENTRY in bytes, or 0 if PLT0_ENTRY is NULL. */
1526 bfd_vma plt0_entry_size
;
1528 /* Index I is the offset into PLT0_ENTRY of a pointer to
1529 _GLOBAL_OFFSET_TABLE_ + I * 4. The value is MINUS_ONE
1530 if there is no such pointer. */
1531 bfd_vma plt0_got_fields
[3];
1533 /* The template for a symbol's PLT entry. */
1534 const bfd_byte
*symbol_entry
;
1536 /* The size of SYMBOL_ENTRY in bytes. */
1537 bfd_vma symbol_entry_size
;
1539 /* Byte offsets of fields in SYMBOL_ENTRY. Not all fields are used
1540 on all targets. The comments by each member indicate the value
1541 that the field must hold. */
1543 bfd_vma got_entry
; /* the address of the symbol's .got.plt entry */
1544 bfd_vma plt
; /* .plt (or a branch to .plt on VxWorks) */
1545 bfd_vma reloc_offset
; /* the offset of the symbol's JMP_SLOT reloc */
1546 bool got20
; /* TRUE if got_entry points to a movi20 instruction
1547 (instead of a constant pool entry). */
1550 /* The offset of the resolver stub from the start of SYMBOL_ENTRY. */
1551 bfd_vma symbol_resolve_offset
;
1553 /* A different PLT layout which can be used for the first
1554 MAX_SHORT_PLT entries. It must share the same plt0. NULL in
1556 const struct elf_sh_plt_info
*short_plt
;
1559 /* The size in bytes of an entry in the procedure linkage table. */
1561 #define ELF_PLT_ENTRY_SIZE 28
1563 /* First entry in an absolute procedure linkage table look like this. */
1565 /* Note - this code has been "optimised" not to use r2. r2 is used by
1566 GCC to return the address of large structures, so it should not be
1567 corrupted here. This does mean however, that this PLT does not conform
1568 to the SH PIC ABI. That spec says that r0 contains the type of the PLT
1569 and r2 contains the GOT id. This version stores the GOT id in r0 and
1570 ignores the type. Loaders can easily detect this difference however,
1571 since the type will always be 0 or 8, and the GOT ids will always be
1572 greater than or equal to 12. */
1573 static const bfd_byte elf_sh_plt0_entry_be
[ELF_PLT_ENTRY_SIZE
] =
1575 0xd0, 0x05, /* mov.l 2f,r0 */
1576 0x60, 0x02, /* mov.l @r0,r0 */
1577 0x2f, 0x06, /* mov.l r0,@-r15 */
1578 0xd0, 0x03, /* mov.l 1f,r0 */
1579 0x60, 0x02, /* mov.l @r0,r0 */
1580 0x40, 0x2b, /* jmp @r0 */
1581 0x60, 0xf6, /* mov.l @r15+,r0 */
1582 0x00, 0x09, /* nop */
1583 0x00, 0x09, /* nop */
1584 0x00, 0x09, /* nop */
1585 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1586 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1589 static const bfd_byte elf_sh_plt0_entry_le
[ELF_PLT_ENTRY_SIZE
] =
1591 0x05, 0xd0, /* mov.l 2f,r0 */
1592 0x02, 0x60, /* mov.l @r0,r0 */
1593 0x06, 0x2f, /* mov.l r0,@-r15 */
1594 0x03, 0xd0, /* mov.l 1f,r0 */
1595 0x02, 0x60, /* mov.l @r0,r0 */
1596 0x2b, 0x40, /* jmp @r0 */
1597 0xf6, 0x60, /* mov.l @r15+,r0 */
1598 0x09, 0x00, /* nop */
1599 0x09, 0x00, /* nop */
1600 0x09, 0x00, /* nop */
1601 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1602 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1605 /* Sebsequent entries in an absolute procedure linkage table look like
1608 static const bfd_byte elf_sh_plt_entry_be
[ELF_PLT_ENTRY_SIZE
] =
1610 0xd0, 0x04, /* mov.l 1f,r0 */
1611 0x60, 0x02, /* mov.l @(r0,r12),r0 */
1612 0xd1, 0x02, /* mov.l 0f,r1 */
1613 0x40, 0x2b, /* jmp @r0 */
1614 0x60, 0x13, /* mov r1,r0 */
1615 0xd1, 0x03, /* mov.l 2f,r1 */
1616 0x40, 0x2b, /* jmp @r0 */
1617 0x00, 0x09, /* nop */
1618 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1619 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1620 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1623 static const bfd_byte elf_sh_plt_entry_le
[ELF_PLT_ENTRY_SIZE
] =
1625 0x04, 0xd0, /* mov.l 1f,r0 */
1626 0x02, 0x60, /* mov.l @r0,r0 */
1627 0x02, 0xd1, /* mov.l 0f,r1 */
1628 0x2b, 0x40, /* jmp @r0 */
1629 0x13, 0x60, /* mov r1,r0 */
1630 0x03, 0xd1, /* mov.l 2f,r1 */
1631 0x2b, 0x40, /* jmp @r0 */
1632 0x09, 0x00, /* nop */
1633 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1634 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1635 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1638 /* Entries in a PIC procedure linkage table look like this. */
1640 static const bfd_byte elf_sh_pic_plt_entry_be
[ELF_PLT_ENTRY_SIZE
] =
1642 0xd0, 0x04, /* mov.l 1f,r0 */
1643 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1644 0x40, 0x2b, /* jmp @r0 */
1645 0x00, 0x09, /* nop */
1646 0x50, 0xc2, /* mov.l @(8,r12),r0 */
1647 0xd1, 0x03, /* mov.l 2f,r1 */
1648 0x40, 0x2b, /* jmp @r0 */
1649 0x50, 0xc1, /* mov.l @(4,r12),r0 */
1650 0x00, 0x09, /* nop */
1651 0x00, 0x09, /* nop */
1652 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1653 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1656 static const bfd_byte elf_sh_pic_plt_entry_le
[ELF_PLT_ENTRY_SIZE
] =
1658 0x04, 0xd0, /* mov.l 1f,r0 */
1659 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1660 0x2b, 0x40, /* jmp @r0 */
1661 0x09, 0x00, /* nop */
1662 0xc2, 0x50, /* mov.l @(8,r12),r0 */
1663 0x03, 0xd1, /* mov.l 2f,r1 */
1664 0x2b, 0x40, /* jmp @r0 */
1665 0xc1, 0x50, /* mov.l @(4,r12),r0 */
1666 0x09, 0x00, /* nop */
1667 0x09, 0x00, /* nop */
1668 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1669 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1672 static const struct elf_sh_plt_info elf_sh_plts
[2][2] = {
1675 /* Big-endian non-PIC. */
1676 elf_sh_plt0_entry_be
,
1678 { MINUS_ONE
, 24, 20 },
1679 elf_sh_plt_entry_be
,
1681 { 20, 16, 24, false },
1686 /* Little-endian non-PIC. */
1687 elf_sh_plt0_entry_le
,
1689 { MINUS_ONE
, 24, 20 },
1690 elf_sh_plt_entry_le
,
1692 { 20, 16, 24, false },
1699 /* Big-endian PIC. */
1700 elf_sh_plt0_entry_be
,
1702 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1703 elf_sh_pic_plt_entry_be
,
1705 { 20, MINUS_ONE
, 24, false },
1710 /* Little-endian PIC. */
1711 elf_sh_plt0_entry_le
,
1713 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1714 elf_sh_pic_plt_entry_le
,
1716 { 20, MINUS_ONE
, 24, false },
1723 #define VXWORKS_PLT_HEADER_SIZE 12
1724 #define VXWORKS_PLT_ENTRY_SIZE 24
1726 static const bfd_byte vxworks_sh_plt0_entry_be
[VXWORKS_PLT_HEADER_SIZE
] =
1728 0xd1, 0x01, /* mov.l @(8,pc),r1 */
1729 0x61, 0x12, /* mov.l @r1,r1 */
1730 0x41, 0x2b, /* jmp @r1 */
1731 0x00, 0x09, /* nop */
1732 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1735 static const bfd_byte vxworks_sh_plt0_entry_le
[VXWORKS_PLT_HEADER_SIZE
] =
1737 0x01, 0xd1, /* mov.l @(8,pc),r1 */
1738 0x12, 0x61, /* mov.l @r1,r1 */
1739 0x2b, 0x41, /* jmp @r1 */
1740 0x09, 0x00, /* nop */
1741 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1744 static const bfd_byte vxworks_sh_plt_entry_be
[VXWORKS_PLT_ENTRY_SIZE
] =
1746 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1747 0x60, 0x02, /* mov.l @r0,r0 */
1748 0x40, 0x2b, /* jmp @r0 */
1749 0x00, 0x09, /* nop */
1750 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1751 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1752 0xa0, 0x00, /* bra PLT (We need to fix the offset.) */
1753 0x00, 0x09, /* nop */
1754 0x00, 0x09, /* nop */
1755 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1758 static const bfd_byte vxworks_sh_plt_entry_le
[VXWORKS_PLT_ENTRY_SIZE
] =
1760 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1761 0x02, 0x60, /* mov.l @r0,r0 */
1762 0x2b, 0x40, /* jmp @r0 */
1763 0x09, 0x00, /* nop */
1764 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1765 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1766 0x00, 0xa0, /* bra PLT (We need to fix the offset.) */
1767 0x09, 0x00, /* nop */
1768 0x09, 0x00, /* nop */
1769 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1772 static const bfd_byte vxworks_sh_pic_plt_entry_be
[VXWORKS_PLT_ENTRY_SIZE
] =
1774 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1775 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1776 0x40, 0x2b, /* jmp @r0 */
1777 0x00, 0x09, /* nop */
1778 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1779 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1780 0x51, 0xc2, /* mov.l @(8,r12),r1 */
1781 0x41, 0x2b, /* jmp @r1 */
1782 0x00, 0x09, /* nop */
1783 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1786 static const bfd_byte vxworks_sh_pic_plt_entry_le
[VXWORKS_PLT_ENTRY_SIZE
] =
1788 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1789 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1790 0x2b, 0x40, /* jmp @r0 */
1791 0x09, 0x00, /* nop */
1792 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1793 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1794 0xc2, 0x51, /* mov.l @(8,r12),r1 */
1795 0x2b, 0x41, /* jmp @r1 */
1796 0x09, 0x00, /* nop */
1797 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1800 static const struct elf_sh_plt_info vxworks_sh_plts
[2][2] = {
1803 /* Big-endian non-PIC. */
1804 vxworks_sh_plt0_entry_be
,
1805 VXWORKS_PLT_HEADER_SIZE
,
1806 { MINUS_ONE
, MINUS_ONE
, 8 },
1807 vxworks_sh_plt_entry_be
,
1808 VXWORKS_PLT_ENTRY_SIZE
,
1809 { 8, 14, 20, false },
1814 /* Little-endian non-PIC. */
1815 vxworks_sh_plt0_entry_le
,
1816 VXWORKS_PLT_HEADER_SIZE
,
1817 { MINUS_ONE
, MINUS_ONE
, 8 },
1818 vxworks_sh_plt_entry_le
,
1819 VXWORKS_PLT_ENTRY_SIZE
,
1820 { 8, 14, 20, false },
1827 /* Big-endian PIC. */
1830 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1831 vxworks_sh_pic_plt_entry_be
,
1832 VXWORKS_PLT_ENTRY_SIZE
,
1833 { 8, MINUS_ONE
, 20, false },
1838 /* Little-endian PIC. */
1841 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1842 vxworks_sh_pic_plt_entry_le
,
1843 VXWORKS_PLT_ENTRY_SIZE
,
1844 { 8, MINUS_ONE
, 20, false },
1851 /* FDPIC PLT entries. Two unimplemented optimizations for lazy
1852 binding are to omit the lazy binding stub when linking with -z now
1853 and to move lazy binding stubs into a separate region for better
1856 #define FDPIC_PLT_ENTRY_SIZE 28
1857 #define FDPIC_PLT_LAZY_OFFSET 20
1859 /* FIXME: The lazy binding stub requires a plt0 - which may need to be
1860 duplicated if it is out of range, or which can be inlined. So
1861 right now it is always inlined, which wastes a word per stub. It
1862 might be easier to handle the duplication if we put the lazy
1863 stubs separately. */
1865 static const bfd_byte fdpic_sh_plt_entry_be
[FDPIC_PLT_ENTRY_SIZE
] =
1867 0xd0, 0x02, /* mov.l @(12,pc),r0 */
1868 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1869 0x70, 0x04, /* add #4, r0 */
1870 0x41, 0x2b, /* jmp @r1 */
1871 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1872 0x00, 0x09, /* nop */
1873 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1874 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1875 0x60, 0xc2, /* mov.l @r12,r0 */
1876 0x40, 0x2b, /* jmp @r0 */
1877 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1878 0x00, 0x09, /* nop */
1881 static const bfd_byte fdpic_sh_plt_entry_le
[FDPIC_PLT_ENTRY_SIZE
] =
1883 0x02, 0xd0, /* mov.l @(12,pc),r0 */
1884 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1885 0x04, 0x70, /* add #4, r0 */
1886 0x2b, 0x41, /* jmp @r1 */
1887 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1888 0x09, 0x00, /* nop */
1889 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1890 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1891 0xc2, 0x60, /* mov.l @r12,r0 */
1892 0x2b, 0x40, /* jmp @r0 */
1893 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1894 0x09, 0x00, /* nop */
1897 static const struct elf_sh_plt_info fdpic_sh_plts
[2] = {
1899 /* Big-endian PIC. */
1902 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1903 fdpic_sh_plt_entry_be
,
1904 FDPIC_PLT_ENTRY_SIZE
,
1905 { 12, MINUS_ONE
, 16, false },
1906 FDPIC_PLT_LAZY_OFFSET
,
1910 /* Little-endian PIC. */
1913 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1914 fdpic_sh_plt_entry_le
,
1915 FDPIC_PLT_ENTRY_SIZE
,
1916 { 12, MINUS_ONE
, 16, false },
1917 FDPIC_PLT_LAZY_OFFSET
,
1922 /* On SH2A, we can use the movi20 instruction to generate shorter PLT
1923 entries for the first 64K slots. We use the normal FDPIC PLT entry
1924 past that point; we could also use movi20s, which might be faster,
1925 but would not be any smaller. */
1927 #define FDPIC_SH2A_PLT_ENTRY_SIZE 24
1928 #define FDPIC_SH2A_PLT_LAZY_OFFSET 16
1930 static const bfd_byte fdpic_sh2a_plt_entry_be
[FDPIC_SH2A_PLT_ENTRY_SIZE
] =
1932 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1933 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1934 0x70, 0x04, /* add #4, r0 */
1935 0x41, 0x2b, /* jmp @r1 */
1936 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1937 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1938 0x60, 0xc2, /* mov.l @r12,r0 */
1939 0x40, 0x2b, /* jmp @r0 */
1940 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1941 0x00, 0x09, /* nop */
1944 static const bfd_byte fdpic_sh2a_plt_entry_le
[FDPIC_SH2A_PLT_ENTRY_SIZE
] =
1946 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1947 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1948 0x04, 0x70, /* add #4, r0 */
1949 0x2b, 0x41, /* jmp @r1 */
1950 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1951 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1952 0xc2, 0x60, /* mov.l @r12,r0 */
1953 0x2b, 0x40, /* jmp @r0 */
1954 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1955 0x09, 0x00, /* nop */
1958 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_be
= {
1959 /* Big-endian FDPIC, max index 64K. */
1962 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1963 fdpic_sh2a_plt_entry_be
,
1964 FDPIC_SH2A_PLT_ENTRY_SIZE
,
1965 { 0, MINUS_ONE
, 12, true },
1966 FDPIC_SH2A_PLT_LAZY_OFFSET
,
1970 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_le
= {
1971 /* Little-endian FDPIC, max index 64K. */
1974 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1975 fdpic_sh2a_plt_entry_le
,
1976 FDPIC_SH2A_PLT_ENTRY_SIZE
,
1977 { 0, MINUS_ONE
, 12, true },
1978 FDPIC_SH2A_PLT_LAZY_OFFSET
,
1982 static const struct elf_sh_plt_info fdpic_sh2a_plts
[2] = {
1984 /* Big-endian PIC. */
1987 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1988 fdpic_sh_plt_entry_be
,
1989 FDPIC_PLT_ENTRY_SIZE
,
1990 { 12, MINUS_ONE
, 16, false },
1991 FDPIC_PLT_LAZY_OFFSET
,
1992 &fdpic_sh2a_short_plt_be
1995 /* Little-endian PIC. */
1998 { MINUS_ONE
, MINUS_ONE
, MINUS_ONE
},
1999 fdpic_sh_plt_entry_le
,
2000 FDPIC_PLT_ENTRY_SIZE
,
2001 { 12, MINUS_ONE
, 16, false },
2002 FDPIC_PLT_LAZY_OFFSET
,
2003 &fdpic_sh2a_short_plt_le
2007 /* Return the type of PLT associated with ABFD. PIC_P is true if
2008 the object is position-independent. */
2010 static const struct elf_sh_plt_info
*
2011 get_plt_info (bfd
*abfd
, bool pic_p
)
2013 if (fdpic_object_p (abfd
))
2015 /* If any input file requires SH2A we can use a shorter PLT
2017 if (sh_get_arch_from_bfd_mach (bfd_get_mach (abfd
)) & arch_sh2a_base
)
2018 return &fdpic_sh2a_plts
[!bfd_big_endian (abfd
)];
2020 return &fdpic_sh_plts
[!bfd_big_endian (abfd
)];
2022 if (vxworks_object_p (abfd
))
2023 return &vxworks_sh_plts
[pic_p
][!bfd_big_endian (abfd
)];
2024 return &elf_sh_plts
[pic_p
][!bfd_big_endian (abfd
)];
2027 /* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
2028 VALUE is the field's value and CODE_P is true if VALUE refers to code,
2032 install_plt_field (bfd
*output_bfd
, bool code_p ATTRIBUTE_UNUSED
,
2033 unsigned long value
, bfd_byte
*addr
)
2035 bfd_put_32 (output_bfd
, value
, addr
);
2038 /* The number of PLT entries which can use a shorter PLT, if any.
2039 Currently always 64K, since only SH-2A FDPIC uses this; a
2040 20-bit movi20 can address that many function descriptors below
2041 _GLOBAL_OFFSET_TABLE_. */
2042 #define MAX_SHORT_PLT 65536
2044 /* Return the index of the PLT entry at byte offset OFFSET. */
2047 get_plt_index (const struct elf_sh_plt_info
*info
, bfd_vma offset
)
2049 bfd_vma plt_index
= 0;
2051 offset
-= info
->plt0_entry_size
;
2052 if (info
->short_plt
!= NULL
)
2054 if (offset
> MAX_SHORT_PLT
* info
->short_plt
->symbol_entry_size
)
2056 plt_index
= MAX_SHORT_PLT
;
2057 offset
-= MAX_SHORT_PLT
* info
->short_plt
->symbol_entry_size
;
2060 info
= info
->short_plt
;
2062 return plt_index
+ offset
/ info
->symbol_entry_size
;
2065 /* Do the inverse operation. */
2068 get_plt_offset (const struct elf_sh_plt_info
*info
, bfd_vma plt_index
)
2072 if (info
->short_plt
!= NULL
)
2074 if (plt_index
> MAX_SHORT_PLT
)
2076 offset
= MAX_SHORT_PLT
* info
->short_plt
->symbol_entry_size
;
2077 plt_index
-= MAX_SHORT_PLT
;
2080 info
= info
->short_plt
;
2082 return (offset
+ info
->plt0_entry_size
2083 + (plt_index
* info
->symbol_entry_size
));
2088 bfd_signed_vma refcount
;
2092 /* sh ELF linker hash entry. */
2094 struct elf_sh_link_hash_entry
2096 struct elf_link_hash_entry root
;
2098 bfd_signed_vma gotplt_refcount
;
2100 /* A local function descriptor, for FDPIC. The refcount counts
2101 R_SH_FUNCDESC, R_SH_GOTOFFFUNCDESC, and R_SH_GOTOFFFUNCDESC20
2102 relocations; the PLT and GOT entry are accounted
2103 for separately. After adjust_dynamic_symbol, the offset is
2104 MINUS_ONE if there is no local descriptor (dynamic linker
2105 managed and no PLT entry, or undefined weak non-dynamic).
2106 During check_relocs we do not yet know whether the local
2107 descriptor will be canonical. */
2108 union gotref funcdesc
;
2110 /* How many of the above refcounted relocations were R_SH_FUNCDESC,
2111 and thus require fixups or relocations. */
2112 bfd_signed_vma abs_funcdesc_refcount
;
2115 GOT_UNKNOWN
= 0, GOT_NORMAL
, GOT_TLS_GD
, GOT_TLS_IE
, GOT_FUNCDESC
2119 #define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent))
2121 struct sh_elf_obj_tdata
2123 struct elf_obj_tdata root
;
2125 /* got_type for each local got entry. */
2126 char *local_got_type
;
2128 /* Function descriptor refcount and offset for each local symbol. */
2129 union gotref
*local_funcdesc
;
2132 #define sh_elf_tdata(abfd) \
2133 ((struct sh_elf_obj_tdata *) (abfd)->tdata.any)
2135 #define sh_elf_local_got_type(abfd) \
2136 (sh_elf_tdata (abfd)->local_got_type)
2138 #define sh_elf_local_funcdesc(abfd) \
2139 (sh_elf_tdata (abfd)->local_funcdesc)
2141 #define is_sh_elf(bfd) \
2142 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2143 && elf_tdata (bfd) != NULL \
2144 && elf_object_id (bfd) == SH_ELF_DATA)
2146 /* Override the generic function because we need to store sh_elf_obj_tdata
2147 as the specific tdata. */
2150 sh_elf_mkobject (bfd
*abfd
)
2152 return bfd_elf_allocate_object (abfd
, sizeof (struct sh_elf_obj_tdata
),
2156 /* sh ELF linker hash table. */
2158 struct elf_sh_link_hash_table
2160 struct elf_link_hash_table root
;
2162 /* Short-cuts to get to dynamic linker sections. */
2163 asection
*sfuncdesc
;
2164 asection
*srelfuncdesc
;
2167 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2170 /* A counter or offset to track a TLS got entry. */
2173 bfd_signed_vma refcount
;
2177 /* The type of PLT to use. */
2178 const struct elf_sh_plt_info
*plt_info
;
2180 /* True if the target system uses FDPIC. */
2184 /* Traverse an sh ELF linker hash table. */
2186 #define sh_elf_link_hash_traverse(table, func, info) \
2187 (elf_link_hash_traverse \
2189 (bool (*) (struct elf_link_hash_entry *, void *)) (func), \
2192 /* Get the sh ELF linker hash table from a link_info structure. */
2194 #define sh_elf_hash_table(p) \
2195 ((is_elf_hash_table ((p)->hash) \
2196 && elf_hash_table_id (elf_hash_table (p)) == SH_ELF_DATA) \
2197 ? (struct elf_sh_link_hash_table *) (p)->hash : NULL)
2199 /* Create an entry in an sh ELF linker hash table. */
2201 static struct bfd_hash_entry
*
2202 sh_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
2203 struct bfd_hash_table
*table
,
2206 struct elf_sh_link_hash_entry
*ret
=
2207 (struct elf_sh_link_hash_entry
*) entry
;
2209 /* Allocate the structure if it has not already been allocated by a
2211 if (ret
== (struct elf_sh_link_hash_entry
*) NULL
)
2212 ret
= ((struct elf_sh_link_hash_entry
*)
2213 bfd_hash_allocate (table
,
2214 sizeof (struct elf_sh_link_hash_entry
)));
2215 if (ret
== (struct elf_sh_link_hash_entry
*) NULL
)
2216 return (struct bfd_hash_entry
*) ret
;
2218 /* Call the allocation method of the superclass. */
2219 ret
= ((struct elf_sh_link_hash_entry
*)
2220 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2222 if (ret
!= (struct elf_sh_link_hash_entry
*) NULL
)
2224 ret
->gotplt_refcount
= 0;
2225 ret
->funcdesc
.refcount
= 0;
2226 ret
->abs_funcdesc_refcount
= 0;
2227 ret
->got_type
= GOT_UNKNOWN
;
2230 return (struct bfd_hash_entry
*) ret
;
2233 /* Create an sh ELF linker hash table. */
2235 static struct bfd_link_hash_table
*
2236 sh_elf_link_hash_table_create (bfd
*abfd
)
2238 struct elf_sh_link_hash_table
*ret
;
2239 size_t amt
= sizeof (struct elf_sh_link_hash_table
);
2241 ret
= (struct elf_sh_link_hash_table
*) bfd_zmalloc (amt
);
2242 if (ret
== (struct elf_sh_link_hash_table
*) NULL
)
2245 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
2246 sh_elf_link_hash_newfunc
,
2247 sizeof (struct elf_sh_link_hash_entry
),
2254 if (fdpic_object_p (abfd
))
2256 ret
->root
.dt_pltgot_required
= true;
2257 ret
->fdpic_p
= true;
2260 return &ret
->root
.root
;
2264 sh_elf_omit_section_dynsym (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2265 struct bfd_link_info
*info
, asection
*p
)
2267 struct elf_sh_link_hash_table
*htab
= sh_elf_hash_table (info
);
2269 /* Non-FDPIC binaries do not need dynamic symbols for sections. */
2273 /* We need dynamic symbols for every section, since segments can
2274 relocate independently. */
2275 switch (elf_section_data (p
)->this_hdr
.sh_type
)
2279 /* If sh_type is yet undecided, assume it could be
2280 SHT_PROGBITS/SHT_NOBITS. */
2284 /* There shouldn't be section relative relocations
2285 against any other section. */
2291 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2292 shortcuts to them in our hash table. */
2295 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
2297 struct elf_sh_link_hash_table
*htab
;
2299 if (! _bfd_elf_create_got_section (dynobj
, info
))
2302 htab
= sh_elf_hash_table (info
);
2306 htab
->sfuncdesc
= bfd_make_section_anyway_with_flags (dynobj
, ".got.funcdesc",
2307 (SEC_ALLOC
| SEC_LOAD
2310 | SEC_LINKER_CREATED
));
2311 if (htab
->sfuncdesc
== NULL
2312 || !bfd_set_section_alignment (htab
->sfuncdesc
, 2))
2315 htab
->srelfuncdesc
= bfd_make_section_anyway_with_flags (dynobj
,
2316 ".rela.got.funcdesc",
2317 (SEC_ALLOC
| SEC_LOAD
2320 | SEC_LINKER_CREATED
2322 if (htab
->srelfuncdesc
== NULL
2323 || !bfd_set_section_alignment (htab
->srelfuncdesc
, 2))
2326 /* Also create .rofixup. */
2327 htab
->srofixup
= bfd_make_section_anyway_with_flags (dynobj
, ".rofixup",
2328 (SEC_ALLOC
| SEC_LOAD
2331 | SEC_LINKER_CREATED
2333 if (htab
->srofixup
== NULL
2334 || !bfd_set_section_alignment (htab
->srofixup
, 2))
2340 /* Create dynamic sections when linking against a dynamic object. */
2343 sh_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2345 struct elf_sh_link_hash_table
*htab
;
2346 flagword flags
, pltflags
;
2348 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2351 switch (bed
->s
->arch_size
)
2362 bfd_set_error (bfd_error_bad_value
);
2366 htab
= sh_elf_hash_table (info
);
2370 if (htab
->root
.dynamic_sections_created
)
2373 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2374 .rel[a].bss sections. */
2376 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2377 | SEC_LINKER_CREATED
);
2380 pltflags
|= SEC_CODE
;
2381 if (bed
->plt_not_loaded
)
2382 pltflags
&= ~ (SEC_LOAD
| SEC_HAS_CONTENTS
);
2383 if (bed
->plt_readonly
)
2384 pltflags
|= SEC_READONLY
;
2386 s
= bfd_make_section_anyway_with_flags (abfd
, ".plt", pltflags
);
2387 htab
->root
.splt
= s
;
2389 || !bfd_set_section_alignment (s
, bed
->plt_alignment
))
2392 if (bed
->want_plt_sym
)
2394 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2396 struct elf_link_hash_entry
*h
;
2397 struct bfd_link_hash_entry
*bh
= NULL
;
2399 if (! (_bfd_generic_link_add_one_symbol
2400 (info
, abfd
, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
,
2401 (bfd_vma
) 0, (const char *) NULL
, false,
2402 get_elf_backend_data (abfd
)->collect
, &bh
)))
2405 h
= (struct elf_link_hash_entry
*) bh
;
2407 h
->type
= STT_OBJECT
;
2408 htab
->root
.hplt
= h
;
2410 if (bfd_link_pic (info
)
2411 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
2415 s
= bfd_make_section_anyway_with_flags (abfd
,
2416 bed
->default_use_rela_p
2417 ? ".rela.plt" : ".rel.plt",
2418 flags
| SEC_READONLY
);
2419 htab
->root
.srelplt
= s
;
2421 || !bfd_set_section_alignment (s
, ptralign
))
2424 if (htab
->root
.sgot
== NULL
2425 && !create_got_section (abfd
, info
))
2428 if (bed
->want_dynbss
)
2430 /* The .dynbss section is a place to put symbols which are defined
2431 by dynamic objects, are referenced by regular objects, and are
2432 not functions. We must allocate space for them in the process
2433 image and use a R_*_COPY reloc to tell the dynamic linker to
2434 initialize them at run time. The linker script puts the .dynbss
2435 section into the .bss section of the final image. */
2436 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynbss",
2437 SEC_ALLOC
| SEC_LINKER_CREATED
);
2438 htab
->root
.sdynbss
= s
;
2442 /* The .rel[a].bss section holds copy relocs. This section is not
2443 normally needed. We need to create it here, though, so that the
2444 linker will map it to an output section. We can't just create it
2445 only if we need it, because we will not know whether we need it
2446 until we have seen all the input files, and the first time the
2447 main linker code calls BFD after examining all the input files
2448 (size_dynamic_sections) the input sections have already been
2449 mapped to the output sections. If the section turns out not to
2450 be needed, we can discard it later. We will never need this
2451 section when generating a shared object, since they do not use
2453 if (! bfd_link_pic (info
))
2455 s
= bfd_make_section_anyway_with_flags (abfd
,
2456 (bed
->default_use_rela_p
2457 ? ".rela.bss" : ".rel.bss"),
2458 flags
| SEC_READONLY
);
2459 htab
->root
.srelbss
= s
;
2461 || !bfd_set_section_alignment (s
, ptralign
))
2466 if (htab
->root
.target_os
== is_vxworks
)
2468 if (!elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
2475 /* Adjust a symbol defined by a dynamic object and referenced by a
2476 regular object. The current definition is in some section of the
2477 dynamic object, but we're not including those sections. We have to
2478 change the definition to something the rest of the link can
2482 sh_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
2483 struct elf_link_hash_entry
*h
)
2485 struct elf_sh_link_hash_table
*htab
;
2488 htab
= sh_elf_hash_table (info
);
2492 /* Make sure we know what is going on here. */
2493 BFD_ASSERT (htab
->root
.dynobj
!= NULL
2498 && !h
->def_regular
)));
2500 /* If this is a function, put it in the procedure linkage table. We
2501 will fill in the contents of the procedure linkage table later,
2502 when we know the address of the .got section. */
2503 if (h
->type
== STT_FUNC
2506 if (h
->plt
.refcount
<= 0
2507 || SYMBOL_CALLS_LOCAL (info
, h
)
2508 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2509 && h
->root
.type
== bfd_link_hash_undefweak
))
2511 /* This case can occur if we saw a PLT reloc in an input
2512 file, but the symbol was never referred to by a dynamic
2513 object. In such a case, we don't actually need to build
2514 a procedure linkage table, and we can just do a REL32
2516 h
->plt
.offset
= (bfd_vma
) -1;
2523 h
->plt
.offset
= (bfd_vma
) -1;
2525 /* If this is a weak symbol, and there is a real definition, the
2526 processor independent code will have arranged for us to see the
2527 real definition first, and we can just use the same value. */
2528 if (h
->is_weakalias
)
2530 struct elf_link_hash_entry
*def
= weakdef (h
);
2531 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
2532 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
2533 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
2534 if (info
->nocopyreloc
)
2535 h
->non_got_ref
= def
->non_got_ref
;
2539 /* This is a reference to a symbol defined by a dynamic object which
2540 is not a function. */
2542 /* If we are creating a shared library, we must presume that the
2543 only references to the symbol are via the global offset table.
2544 For such cases we need not do anything here; the relocations will
2545 be handled correctly by relocate_section. */
2546 if (bfd_link_pic (info
))
2549 /* If there are no references to this symbol that do not use the
2550 GOT, we don't need to generate a copy reloc. */
2551 if (!h
->non_got_ref
)
2554 /* If -z nocopyreloc was given, we won't generate them either. */
2555 if (0 && info
->nocopyreloc
)
2561 /* If we don't find any dynamic relocs in read-only sections, then
2562 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2563 if (0 && !_bfd_elf_readonly_dynrelocs (h
))
2569 /* We must allocate the symbol in our .dynbss section, which will
2570 become part of the .bss section of the executable. There will be
2571 an entry for this symbol in the .dynsym section. The dynamic
2572 object will contain position independent code, so all references
2573 from the dynamic object to this symbol will go through the global
2574 offset table. The dynamic linker will use the .dynsym entry to
2575 determine the address it must put in the global offset table, so
2576 both the dynamic object and the regular object will refer to the
2577 same memory location for the variable. */
2579 s
= htab
->root
.sdynbss
;
2580 BFD_ASSERT (s
!= NULL
);
2582 /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2583 copy the initial value out of the dynamic object and into the
2584 runtime process image. We need to remember the offset into the
2585 .rela.bss section we are going to use. */
2586 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
2590 srel
= htab
->root
.srelbss
;
2591 BFD_ASSERT (srel
!= NULL
);
2592 srel
->size
+= sizeof (Elf32_External_Rela
);
2596 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
2599 /* Allocate space in .plt, .got and associated reloc sections for
2603 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
2605 struct bfd_link_info
*info
;
2606 struct elf_sh_link_hash_table
*htab
;
2607 struct elf_sh_link_hash_entry
*eh
;
2608 struct elf_dyn_relocs
*p
;
2610 if (h
->root
.type
== bfd_link_hash_indirect
)
2613 info
= (struct bfd_link_info
*) inf
;
2614 htab
= sh_elf_hash_table (info
);
2618 eh
= (struct elf_sh_link_hash_entry
*) h
;
2619 if ((h
->got
.refcount
> 0
2621 && eh
->gotplt_refcount
> 0)
2623 /* The symbol has been forced local, or we have some direct got refs,
2624 so treat all the gotplt refs as got refs. */
2625 h
->got
.refcount
+= eh
->gotplt_refcount
;
2626 if (h
->plt
.refcount
>= eh
->gotplt_refcount
)
2627 h
->plt
.refcount
-= eh
->gotplt_refcount
;
2630 if (htab
->root
.dynamic_sections_created
2631 && h
->plt
.refcount
> 0
2632 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2633 || h
->root
.type
!= bfd_link_hash_undefweak
))
2635 /* Make sure this symbol is output as a dynamic symbol.
2636 Undefined weak syms won't yet be marked as dynamic. */
2637 if (h
->dynindx
== -1
2638 && !h
->forced_local
)
2640 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2644 if (bfd_link_pic (info
)
2645 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
2647 asection
*s
= htab
->root
.splt
;
2648 const struct elf_sh_plt_info
*plt_info
;
2650 /* If this is the first .plt entry, make room for the special
2653 s
->size
+= htab
->plt_info
->plt0_entry_size
;
2655 h
->plt
.offset
= s
->size
;
2657 /* If this symbol is not defined in a regular file, and we are
2658 not generating a shared library, then set the symbol to this
2659 location in the .plt. This is required to make function
2660 pointers compare as equal between the normal executable and
2661 the shared library. Skip this for FDPIC, since the
2662 function's address will be the address of the canonical
2663 function descriptor. */
2664 if (!htab
->fdpic_p
&& !bfd_link_pic (info
) && !h
->def_regular
)
2666 h
->root
.u
.def
.section
= s
;
2667 h
->root
.u
.def
.value
= h
->plt
.offset
;
2670 /* Make room for this entry. */
2671 plt_info
= htab
->plt_info
;
2672 if (plt_info
->short_plt
!= NULL
2673 && (get_plt_index (plt_info
->short_plt
, s
->size
) < MAX_SHORT_PLT
))
2674 plt_info
= plt_info
->short_plt
;
2675 s
->size
+= plt_info
->symbol_entry_size
;
2677 /* We also need to make an entry in the .got.plt section, which
2678 will be placed in the .got section by the linker script. */
2680 htab
->root
.sgotplt
->size
+= 4;
2682 htab
->root
.sgotplt
->size
+= 8;
2684 /* We also need to make an entry in the .rel.plt section. */
2685 htab
->root
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
2687 if (htab
->root
.target_os
== is_vxworks
&& !bfd_link_pic (info
))
2689 /* VxWorks executables have a second set of relocations
2690 for each PLT entry. They go in a separate relocation
2691 section, which is processed by the kernel loader. */
2693 /* There is a relocation for the initial PLT entry:
2694 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */
2695 if (h
->plt
.offset
== htab
->plt_info
->plt0_entry_size
)
2696 htab
->srelplt2
->size
+= sizeof (Elf32_External_Rela
);
2698 /* There are two extra relocations for each subsequent
2699 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2700 and an R_SH_DIR32 relocation for the PLT entry. */
2701 htab
->srelplt2
->size
+= sizeof (Elf32_External_Rela
) * 2;
2706 h
->plt
.offset
= (bfd_vma
) -1;
2712 h
->plt
.offset
= (bfd_vma
) -1;
2716 if (h
->got
.refcount
> 0)
2720 enum got_type got_type
= sh_elf_hash_entry (h
)->got_type
;
2722 /* Make sure this symbol is output as a dynamic symbol.
2723 Undefined weak syms won't yet be marked as dynamic. */
2724 if (h
->dynindx
== -1
2725 && !h
->forced_local
)
2727 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2731 s
= htab
->root
.sgot
;
2732 h
->got
.offset
= s
->size
;
2734 /* R_SH_TLS_GD needs 2 consecutive GOT slots. */
2735 if (got_type
== GOT_TLS_GD
)
2737 dyn
= htab
->root
.dynamic_sections_created
;
2740 /* No dynamic relocations required. */
2741 if (htab
->fdpic_p
&& !bfd_link_pic (info
)
2742 && h
->root
.type
!= bfd_link_hash_undefweak
2743 && (got_type
== GOT_NORMAL
|| got_type
== GOT_FUNCDESC
))
2744 htab
->srofixup
->size
+= 4;
2746 /* No dynamic relocations required when IE->LE conversion happens. */
2747 else if (got_type
== GOT_TLS_IE
2749 && !bfd_link_pic (info
))
2751 /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2752 R_SH_TLS_GD needs one if local symbol and two if global. */
2753 else if ((got_type
== GOT_TLS_GD
&& h
->dynindx
== -1)
2754 || got_type
== GOT_TLS_IE
)
2755 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2756 else if (got_type
== GOT_TLS_GD
)
2757 htab
->root
.srelgot
->size
+= 2 * sizeof (Elf32_External_Rela
);
2758 else if (got_type
== GOT_FUNCDESC
)
2760 if (!bfd_link_pic (info
) && SYMBOL_FUNCDESC_LOCAL (info
, h
))
2761 htab
->srofixup
->size
+= 4;
2763 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2765 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2766 || h
->root
.type
!= bfd_link_hash_undefweak
)
2767 && (bfd_link_pic (info
)
2768 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
2769 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2770 else if (htab
->fdpic_p
2771 && !bfd_link_pic (info
)
2772 && got_type
== GOT_NORMAL
2773 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2774 || h
->root
.type
!= bfd_link_hash_undefweak
))
2775 htab
->srofixup
->size
+= 4;
2778 h
->got
.offset
= (bfd_vma
) -1;
2780 /* Allocate space for any dynamic relocations to function
2781 descriptors, canonical or otherwise. We need to relocate the
2782 reference unless it resolves to zero, which only happens for
2783 undefined weak symbols (either non-default visibility, or when
2784 static linking). Any GOT slot is accounted for elsewhere. */
2785 if (eh
->abs_funcdesc_refcount
> 0
2786 && (h
->root
.type
!= bfd_link_hash_undefweak
2787 || (htab
->root
.dynamic_sections_created
2788 && ! SYMBOL_CALLS_LOCAL (info
, h
))))
2790 if (!bfd_link_pic (info
) && SYMBOL_FUNCDESC_LOCAL (info
, h
))
2791 htab
->srofixup
->size
+= eh
->abs_funcdesc_refcount
* 4;
2793 htab
->root
.srelgot
->size
2794 += eh
->abs_funcdesc_refcount
* sizeof (Elf32_External_Rela
);
2797 /* We must allocate a function descriptor if there are references to
2798 a canonical descriptor (R_SH_GOTFUNCDESC or R_SH_FUNCDESC) and
2799 the dynamic linker isn't going to allocate it. None of this
2800 applies if we already created one in .got.plt, but if the
2801 canonical function descriptor can be in this object, there
2802 won't be a PLT entry at all. */
2803 if ((eh
->funcdesc
.refcount
> 0
2804 || (h
->got
.offset
!= MINUS_ONE
&& eh
->got_type
== GOT_FUNCDESC
))
2805 && h
->root
.type
!= bfd_link_hash_undefweak
2806 && SYMBOL_FUNCDESC_LOCAL (info
, h
))
2808 /* Make room for this function descriptor. */
2809 eh
->funcdesc
.offset
= htab
->sfuncdesc
->size
;
2810 htab
->sfuncdesc
->size
+= 8;
2812 /* We will need a relocation or two fixups to initialize the
2813 function descriptor, so allocate those too. */
2814 if (!bfd_link_pic (info
) && SYMBOL_CALLS_LOCAL (info
, h
))
2815 htab
->srofixup
->size
+= 8;
2817 htab
->srelfuncdesc
->size
+= sizeof (Elf32_External_Rela
);
2820 if (h
->dyn_relocs
== NULL
)
2823 /* In the shared -Bsymbolic case, discard space allocated for
2824 dynamic pc-relative relocs against symbols which turn out to be
2825 defined in regular objects. For the normal shared case, discard
2826 space for pc-relative relocs that have become local due to symbol
2827 visibility changes. */
2829 if (bfd_link_pic (info
))
2831 if (SYMBOL_CALLS_LOCAL (info
, h
))
2833 struct elf_dyn_relocs
**pp
;
2835 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
; )
2837 p
->count
-= p
->pc_count
;
2846 if (htab
->root
.target_os
== is_vxworks
)
2848 struct elf_dyn_relocs
**pp
;
2850 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
; )
2852 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
2859 /* Also discard relocs on undefined weak syms with non-default
2861 if (h
->dyn_relocs
!= NULL
2862 && h
->root
.type
== bfd_link_hash_undefweak
)
2864 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2865 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
2866 h
->dyn_relocs
= NULL
;
2868 /* Make sure undefined weak symbols are output as a dynamic
2870 else if (h
->dynindx
== -1
2871 && !h
->forced_local
)
2873 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2880 /* For the non-shared case, discard space for relocs against
2881 symbols which turn out to need copy relocs or are not
2887 || (htab
->root
.dynamic_sections_created
2888 && (h
->root
.type
== bfd_link_hash_undefweak
2889 || h
->root
.type
== bfd_link_hash_undefined
))))
2891 /* Make sure this symbol is output as a dynamic symbol.
2892 Undefined weak syms won't yet be marked as dynamic. */
2893 if (h
->dynindx
== -1
2894 && !h
->forced_local
)
2896 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2900 /* If that succeeded, we know we'll be keeping all the
2902 if (h
->dynindx
!= -1)
2906 h
->dyn_relocs
= NULL
;
2911 /* Finally, allocate space. */
2912 for (p
= h
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2914 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2915 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2917 /* If we need relocations, we do not need fixups. */
2918 if (htab
->fdpic_p
&& !bfd_link_pic (info
))
2919 htab
->srofixup
->size
-= 4 * (p
->count
- p
->pc_count
);
2925 /* This function is called after all the input files have been read,
2926 and the input sections have been assigned to output sections.
2927 It's a convenient place to determine the PLT style. */
2930 sh_elf_always_size_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
2932 sh_elf_hash_table (info
)->plt_info
= get_plt_info (output_bfd
,
2933 bfd_link_pic (info
));
2935 if (sh_elf_hash_table (info
)->fdpic_p
&& !bfd_link_relocatable (info
)
2936 && !bfd_elf_stack_segment_size (output_bfd
, info
,
2937 "__stacksize", DEFAULT_STACK_SIZE
))
2942 /* Set the sizes of the dynamic sections. */
2945 sh_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2946 struct bfd_link_info
*info
)
2948 struct elf_sh_link_hash_table
*htab
;
2954 htab
= sh_elf_hash_table (info
);
2958 dynobj
= htab
->root
.dynobj
;
2959 BFD_ASSERT (dynobj
!= NULL
);
2961 if (htab
->root
.dynamic_sections_created
)
2963 /* Set the contents of the .interp section to the interpreter. */
2964 if (bfd_link_executable (info
) && !info
->nointerp
)
2966 s
= bfd_get_linker_section (dynobj
, ".interp");
2967 BFD_ASSERT (s
!= NULL
);
2968 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2969 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2973 /* Set up .got offsets for local syms, and space for local dynamic
2975 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2977 bfd_signed_vma
*local_got
;
2978 bfd_signed_vma
*end_local_got
;
2979 union gotref
*local_funcdesc
, *end_local_funcdesc
;
2980 char *local_got_type
;
2981 bfd_size_type locsymcount
;
2982 Elf_Internal_Shdr
*symtab_hdr
;
2985 if (! is_sh_elf (ibfd
))
2988 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2990 struct elf_dyn_relocs
*p
;
2992 for (p
= ((struct elf_dyn_relocs
*)
2993 elf_section_data (s
)->local_dynrel
);
2997 if (! bfd_is_abs_section (p
->sec
)
2998 && bfd_is_abs_section (p
->sec
->output_section
))
3000 /* Input section has been discarded, either because
3001 it is a copy of a linkonce section or due to
3002 linker script /DISCARD/, so we'll be discarding
3005 else if (htab
->root
.target_os
== is_vxworks
3006 && strcmp (p
->sec
->output_section
->name
,
3009 /* Relocations in vxworks .tls_vars sections are
3010 handled specially by the loader. */
3012 else if (p
->count
!= 0)
3014 srel
= elf_section_data (p
->sec
)->sreloc
;
3015 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3016 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
3018 info
->flags
|= DF_TEXTREL
;
3019 info
->callbacks
->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
3020 p
->sec
->owner
, p
->sec
);
3023 /* If we need relocations, we do not need fixups. */
3024 if (htab
->fdpic_p
&& !bfd_link_pic (info
))
3025 htab
->srofixup
->size
-= 4 * (p
->count
- p
->pc_count
);
3030 symtab_hdr
= &elf_symtab_hdr (ibfd
);
3031 locsymcount
= symtab_hdr
->sh_info
;
3032 s
= htab
->root
.sgot
;
3033 srel
= htab
->root
.srelgot
;
3035 local_got
= elf_local_got_refcounts (ibfd
);
3038 end_local_got
= local_got
+ locsymcount
;
3039 local_got_type
= sh_elf_local_got_type (ibfd
);
3040 local_funcdesc
= sh_elf_local_funcdesc (ibfd
);
3041 for (; local_got
< end_local_got
; ++local_got
)
3045 *local_got
= s
->size
;
3047 if (*local_got_type
== GOT_TLS_GD
)
3049 if (bfd_link_pic (info
))
3050 srel
->size
+= sizeof (Elf32_External_Rela
);
3052 htab
->srofixup
->size
+= 4;
3054 if (*local_got_type
== GOT_FUNCDESC
)
3056 if (local_funcdesc
== NULL
)
3060 size
= locsymcount
* sizeof (union gotref
);
3061 local_funcdesc
= (union gotref
*) bfd_zalloc (ibfd
,
3063 if (local_funcdesc
== NULL
)
3065 sh_elf_local_funcdesc (ibfd
) = local_funcdesc
;
3066 local_funcdesc
+= (local_got
3067 - elf_local_got_refcounts (ibfd
));
3069 local_funcdesc
->refcount
++;
3074 *local_got
= (bfd_vma
) -1;
3079 local_funcdesc
= sh_elf_local_funcdesc (ibfd
);
3082 end_local_funcdesc
= local_funcdesc
+ locsymcount
;
3084 for (; local_funcdesc
< end_local_funcdesc
; ++local_funcdesc
)
3086 if (local_funcdesc
->refcount
> 0)
3088 local_funcdesc
->offset
= htab
->sfuncdesc
->size
;
3089 htab
->sfuncdesc
->size
+= 8;
3090 if (!bfd_link_pic (info
))
3091 htab
->srofixup
->size
+= 8;
3093 htab
->srelfuncdesc
->size
+= sizeof (Elf32_External_Rela
);
3096 local_funcdesc
->offset
= MINUS_ONE
;
3102 if (htab
->tls_ldm_got
.refcount
> 0)
3104 /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3106 htab
->tls_ldm_got
.offset
= htab
->root
.sgot
->size
;
3107 htab
->root
.sgot
->size
+= 8;
3108 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
3111 htab
->tls_ldm_got
.offset
= -1;
3113 /* Only the reserved entries should be present. For FDPIC, they go at
3114 the end of .got.plt. */
3117 BFD_ASSERT (htab
->root
.sgotplt
&& htab
->root
.sgotplt
->size
== 12);
3118 htab
->root
.sgotplt
->size
= 0;
3121 /* Allocate global sym .plt and .got entries, and space for global
3122 sym dynamic relocs. */
3123 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
3125 /* Move the reserved entries and the _GLOBAL_OFFSET_TABLE_ symbol to the
3126 end of the FDPIC .got.plt. */
3129 htab
->root
.hgot
->root
.u
.def
.value
= htab
->root
.sgotplt
->size
;
3130 htab
->root
.sgotplt
->size
+= 12;
3133 /* At the very end of the .rofixup section is a pointer to the GOT. */
3134 if (htab
->fdpic_p
&& htab
->srofixup
!= NULL
)
3135 htab
->srofixup
->size
+= 4;
3137 /* We now have determined the sizes of the various dynamic sections.
3138 Allocate memory for them. */
3140 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
3142 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
3145 if (s
== htab
->root
.splt
3146 || s
== htab
->root
.sgot
3147 || s
== htab
->root
.sgotplt
3148 || s
== htab
->sfuncdesc
3149 || s
== htab
->srofixup
3150 || s
== htab
->root
.sdynbss
)
3152 /* Strip this section if we don't need it; see the
3155 else if (startswith (bfd_section_name (s
), ".rela"))
3157 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
&& s
!= htab
->srelplt2
)
3160 /* We use the reloc_count field as a counter if we need
3161 to copy relocs into the output file. */
3166 /* It's not one of our sections, so don't allocate space. */
3172 /* If we don't need this section, strip it from the
3173 output file. This is mostly to handle .rela.bss and
3174 .rela.plt. We must create both sections in
3175 create_dynamic_sections, because they must be created
3176 before the linker maps input sections to output
3177 sections. The linker does that before
3178 adjust_dynamic_symbol is called, and it is that
3179 function which decides whether anything needs to go
3180 into these sections. */
3182 s
->flags
|= SEC_EXCLUDE
;
3186 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
3189 /* Allocate memory for the section contents. We use bfd_zalloc
3190 here in case unused entries are not reclaimed before the
3191 section's contents are written out. This should not happen,
3192 but this way if it does, we get a R_SH_NONE reloc instead
3194 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
3195 if (s
->contents
== NULL
)
3199 return _bfd_elf_maybe_vxworks_add_dynamic_tags (output_bfd
, info
,
3203 /* Add a dynamic relocation to the SRELOC section. */
3205 inline static bfd_vma
3206 sh_elf_add_dyn_reloc (bfd
*output_bfd
, asection
*sreloc
, bfd_vma offset
,
3207 int reloc_type
, long dynindx
, bfd_vma addend
)
3209 Elf_Internal_Rela outrel
;
3210 bfd_vma reloc_offset
;
3212 outrel
.r_offset
= offset
;
3213 outrel
.r_info
= ELF32_R_INFO (dynindx
, reloc_type
);
3214 outrel
.r_addend
= addend
;
3216 reloc_offset
= sreloc
->reloc_count
* sizeof (Elf32_External_Rela
);
3217 BFD_ASSERT (reloc_offset
< sreloc
->size
);
3218 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
3219 sreloc
->contents
+ reloc_offset
);
3220 sreloc
->reloc_count
++;
3222 return reloc_offset
;
3225 /* Add an FDPIC read-only fixup. */
3228 sh_elf_add_rofixup (bfd
*output_bfd
, asection
*srofixup
, bfd_vma offset
)
3230 bfd_vma fixup_offset
;
3232 fixup_offset
= srofixup
->reloc_count
++ * 4;
3233 BFD_ASSERT (fixup_offset
< srofixup
->size
);
3234 bfd_put_32 (output_bfd
, offset
, srofixup
->contents
+ fixup_offset
);
3237 /* Return the offset of the generated .got section from the
3238 _GLOBAL_OFFSET_TABLE_ symbol. */
3240 static bfd_signed_vma
3241 sh_elf_got_offset (struct elf_sh_link_hash_table
*htab
)
3243 return (htab
->root
.sgot
->output_offset
- htab
->root
.sgotplt
->output_offset
3244 - htab
->root
.hgot
->root
.u
.def
.value
);
3247 /* Find the segment number in which OSEC, and output section, is
3251 sh_elf_osec_to_segment (bfd
*output_bfd
, asection
*osec
)
3253 Elf_Internal_Phdr
*p
= NULL
;
3255 if (output_bfd
->xvec
->flavour
== bfd_target_elf_flavour
3256 /* PR ld/17110: Do not look for output segments in an input bfd. */
3257 && output_bfd
->direction
!= read_direction
)
3258 p
= _bfd_elf_find_segment_containing_section (output_bfd
, osec
);
3260 /* FIXME: Nothing ever says what this index is relative to. The kernel
3261 supplies data in terms of the number of load segments but this is
3262 a phdr index and the first phdr may not be a load segment. */
3263 return (p
!= NULL
) ? p
- elf_tdata (output_bfd
)->phdr
: -1;
3267 sh_elf_osec_readonly_p (bfd
*output_bfd
, asection
*osec
)
3269 unsigned seg
= sh_elf_osec_to_segment (output_bfd
, osec
);
3271 return (seg
!= (unsigned) -1
3272 && ! (elf_tdata (output_bfd
)->phdr
[seg
].p_flags
& PF_W
));
3275 /* Generate the initial contents of a local function descriptor, along
3276 with any relocations or fixups required. */
3278 sh_elf_initialize_funcdesc (bfd
*output_bfd
,
3279 struct bfd_link_info
*info
,
3280 struct elf_link_hash_entry
*h
,
3285 struct elf_sh_link_hash_table
*htab
;
3289 htab
= sh_elf_hash_table (info
);
3291 /* FIXME: The ABI says that the offset to the function goes in the
3292 descriptor, along with the segment index. We're RELA, so it could
3293 go in the reloc instead... */
3295 if (h
!= NULL
&& SYMBOL_CALLS_LOCAL (info
, h
))
3297 section
= h
->root
.u
.def
.section
;
3298 value
= h
->root
.u
.def
.value
;
3301 if (h
== NULL
|| SYMBOL_CALLS_LOCAL (info
, h
))
3303 dynindx
= elf_section_data (section
->output_section
)->dynindx
;
3304 addr
= value
+ section
->output_offset
;
3305 seg
= sh_elf_osec_to_segment (output_bfd
, section
->output_section
);
3309 BFD_ASSERT (h
->dynindx
!= -1);
3310 dynindx
= h
->dynindx
;
3314 if (!bfd_link_pic (info
) && SYMBOL_CALLS_LOCAL (info
, h
))
3316 if (h
== NULL
|| h
->root
.type
!= bfd_link_hash_undefweak
)
3318 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
3320 + htab
->sfuncdesc
->output_section
->vma
3321 + htab
->sfuncdesc
->output_offset
);
3322 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
3324 + htab
->sfuncdesc
->output_section
->vma
3325 + htab
->sfuncdesc
->output_offset
);
3328 /* There are no dynamic relocations so fill in the final
3329 address and gp value (barring fixups). */
3330 addr
+= section
->output_section
->vma
;
3331 seg
= htab
->root
.hgot
->root
.u
.def
.value
3332 + htab
->root
.hgot
->root
.u
.def
.section
->output_section
->vma
3333 + htab
->root
.hgot
->root
.u
.def
.section
->output_offset
;
3336 sh_elf_add_dyn_reloc (output_bfd
, htab
->srelfuncdesc
,
3338 + htab
->sfuncdesc
->output_section
->vma
3339 + htab
->sfuncdesc
->output_offset
,
3340 R_SH_FUNCDESC_VALUE
, dynindx
, 0);
3342 bfd_put_32 (output_bfd
, addr
, htab
->sfuncdesc
->contents
+ offset
);
3343 bfd_put_32 (output_bfd
, seg
, htab
->sfuncdesc
->contents
+ offset
+ 4);
3348 /* Install a 20-bit movi20 field starting at ADDR, which occurs in OUTPUT_BFD.
3349 VALUE is the field's value. Return bfd_reloc_ok if successful or an error
3352 static bfd_reloc_status_type
3353 install_movi20_field (bfd
*output_bfd
, unsigned long relocation
,
3354 bfd
*input_bfd
, asection
*input_section
,
3355 bfd_byte
*contents
, bfd_vma offset
)
3357 unsigned long cur_val
;
3359 bfd_reloc_status_type r
;
3361 if (offset
> bfd_get_section_limit (input_bfd
, input_section
))
3362 return bfd_reloc_outofrange
;
3364 r
= bfd_check_overflow (complain_overflow_signed
, 20, 0,
3365 bfd_arch_bits_per_address (input_bfd
), relocation
);
3366 if (r
!= bfd_reloc_ok
)
3369 addr
= contents
+ offset
;
3370 cur_val
= bfd_get_16 (output_bfd
, addr
);
3371 bfd_put_16 (output_bfd
, cur_val
| ((relocation
& 0xf0000) >> 12), addr
);
3372 bfd_put_16 (output_bfd
, relocation
& 0xffff, addr
+ 2);
3374 return bfd_reloc_ok
;
3377 /* Relocate an SH ELF section. */
3380 sh_elf_relocate_section (bfd
*output_bfd
, struct bfd_link_info
*info
,
3381 bfd
*input_bfd
, asection
*input_section
,
3382 bfd_byte
*contents
, Elf_Internal_Rela
*relocs
,
3383 Elf_Internal_Sym
*local_syms
,
3384 asection
**local_sections
)
3386 struct elf_sh_link_hash_table
*htab
;
3387 Elf_Internal_Shdr
*symtab_hdr
;
3388 struct elf_link_hash_entry
**sym_hashes
;
3389 Elf_Internal_Rela
*rel
, *relend
;
3390 bfd_vma
*local_got_offsets
;
3391 asection
*sgot
= NULL
;
3392 asection
*sgotplt
= NULL
;
3393 asection
*splt
= NULL
;
3394 asection
*sreloc
= NULL
;
3395 asection
*srelgot
= NULL
;
3396 bool is_vxworks_tls
;
3397 unsigned isec_segment
, got_segment
, plt_segment
, check_segment
[2];
3398 bool fdpic_p
= false;
3400 if (!is_sh_elf (input_bfd
))
3402 bfd_set_error (bfd_error_wrong_format
);
3406 htab
= sh_elf_hash_table (info
);
3409 sgot
= htab
->root
.sgot
;
3410 sgotplt
= htab
->root
.sgotplt
;
3411 srelgot
= htab
->root
.srelgot
;
3412 splt
= htab
->root
.splt
;
3413 fdpic_p
= htab
->fdpic_p
;
3415 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
3416 sym_hashes
= elf_sym_hashes (input_bfd
);
3417 local_got_offsets
= elf_local_got_offsets (input_bfd
);
3419 isec_segment
= sh_elf_osec_to_segment (output_bfd
,
3420 input_section
->output_section
);
3421 if (fdpic_p
&& sgot
)
3422 got_segment
= sh_elf_osec_to_segment (output_bfd
,
3423 sgot
->output_section
);
3426 if (fdpic_p
&& splt
)
3427 plt_segment
= sh_elf_osec_to_segment (output_bfd
,
3428 splt
->output_section
);
3432 /* We have to handle relocations in vxworks .tls_vars sections
3433 specially, because the dynamic loader is 'weird'. */
3434 is_vxworks_tls
= (htab
&& htab
->root
.target_os
== is_vxworks
&& bfd_link_pic (info
)
3435 && !strcmp (input_section
->output_section
->name
,
3439 relend
= relocs
+ input_section
->reloc_count
;
3440 for (; rel
< relend
; rel
++)
3443 reloc_howto_type
*howto
;
3444 unsigned long r_symndx
;
3445 Elf_Internal_Sym
*sym
;
3447 struct elf_link_hash_entry
*h
;
3449 bfd_vma addend
= (bfd_vma
) 0;
3450 bfd_reloc_status_type r
;
3452 enum got_type got_type
;
3453 const char *symname
= NULL
;
3454 bool resolved_to_zero
;
3456 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3458 r_type
= ELF32_R_TYPE (rel
->r_info
);
3460 /* Many of the relocs are only used for relaxing, and are
3461 handled entirely by the relaxation code. */
3462 if (r_type
>= (int) R_SH_GNU_VTINHERIT
3463 && r_type
<= (int) R_SH_LABEL
)
3465 if (r_type
== (int) R_SH_NONE
)
3469 || r_type
>= R_SH_max
3470 || (r_type
>= (int) R_SH_FIRST_INVALID_RELOC
3471 && r_type
<= (int) R_SH_LAST_INVALID_RELOC
)
3472 || (r_type
>= (int) R_SH_FIRST_INVALID_RELOC_2
3473 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_2
)
3474 || ( r_type
>= (int) R_SH_FIRST_INVALID_RELOC_3
3475 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_3
)
3476 || ( r_type
>= (int) R_SH_FIRST_INVALID_RELOC_4
3477 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_4
)
3478 || ( r_type
>= (int) R_SH_FIRST_INVALID_RELOC_5
3479 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_5
)
3480 || ( r_type
>= (int) R_SH_FIRST_INVALID_RELOC_6
3481 && r_type
<= (int) R_SH_LAST_INVALID_RELOC_6
))
3483 bfd_set_error (bfd_error_bad_value
);
3487 howto
= get_howto_table (output_bfd
) + r_type
;
3489 /* For relocs that aren't partial_inplace, we get the addend from
3491 if (! howto
->partial_inplace
)
3492 addend
= rel
->r_addend
;
3494 resolved_to_zero
= false;
3498 check_segment
[0] = -1;
3499 check_segment
[1] = -1;
3500 if (r_symndx
< symtab_hdr
->sh_info
)
3502 sym
= local_syms
+ r_symndx
;
3503 sec
= local_sections
[r_symndx
];
3505 symname
= bfd_elf_string_from_elf_section
3506 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
3507 if (symname
== NULL
|| *symname
== '\0')
3508 symname
= bfd_section_name (sec
);
3510 relocation
= (sec
->output_section
->vma
3511 + sec
->output_offset
3514 if (sec
!= NULL
&& discarded_section (sec
))
3515 /* Handled below. */
3517 else if (bfd_link_relocatable (info
))
3519 /* This is a relocatable link. We don't have to change
3520 anything, unless the reloc is against a section symbol,
3521 in which case we have to adjust according to where the
3522 section symbol winds up in the output section. */
3523 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
3525 if (! howto
->partial_inplace
)
3527 /* For relocations with the addend in the
3528 relocation, we need just to update the addend.
3529 All real relocs are of type partial_inplace; this
3530 code is mostly for completeness. */
3531 rel
->r_addend
+= sec
->output_offset
;
3536 /* Relocs of type partial_inplace need to pick up the
3537 contents in the contents and add the offset resulting
3538 from the changed location of the section symbol.
3539 Using _bfd_final_link_relocate (e.g. goto
3540 final_link_relocate) here would be wrong, because
3541 relocations marked pc_relative would get the current
3542 location subtracted, and we must only do that at the
3544 r
= _bfd_relocate_contents (howto
, input_bfd
,
3547 contents
+ rel
->r_offset
);
3548 goto relocation_done
;
3553 else if (! howto
->partial_inplace
)
3555 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
3556 addend
= rel
->r_addend
;
3558 else if ((sec
->flags
& SEC_MERGE
)
3559 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
3563 if (howto
->rightshift
|| howto
->src_mask
!= 0xffffffff)
3566 /* xgettext:c-format */
3567 (_("%pB(%pA+%#" PRIx64
"): "
3568 "%s relocation against SEC_MERGE section"),
3569 input_bfd
, input_section
,
3570 (uint64_t) rel
->r_offset
, howto
->name
);
3574 addend
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
3577 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
3579 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
3580 bfd_put_32 (input_bfd
, addend
, contents
+ rel
->r_offset
);
3586 /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
3589 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3590 symname
= h
->root
.root
.string
;
3591 while (h
->root
.type
== bfd_link_hash_indirect
3592 || h
->root
.type
== bfd_link_hash_warning
)
3593 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3594 if (h
->root
.type
== bfd_link_hash_defined
3595 || h
->root
.type
== bfd_link_hash_defweak
)
3599 dyn
= htab
? htab
->root
.dynamic_sections_created
: false;
3600 sec
= h
->root
.u
.def
.section
;
3601 /* In these cases, we don't need the relocation value.
3602 We check specially because in some obscure cases
3603 sec->output_section will be NULL. */
3604 if (r_type
== R_SH_GOTPC
3605 || r_type
== R_SH_GOTPC_LOW16
3606 || r_type
== R_SH_GOTPC_MEDLOW16
3607 || r_type
== R_SH_GOTPC_MEDHI16
3608 || r_type
== R_SH_GOTPC_HI16
3609 || ((r_type
== R_SH_PLT32
3610 || r_type
== R_SH_PLT_LOW16
3611 || r_type
== R_SH_PLT_MEDLOW16
3612 || r_type
== R_SH_PLT_MEDHI16
3613 || r_type
== R_SH_PLT_HI16
)
3614 && h
->plt
.offset
!= (bfd_vma
) -1)
3615 || ((r_type
== R_SH_GOT32
3616 || r_type
== R_SH_GOT20
3617 || r_type
== R_SH_GOTFUNCDESC
3618 || r_type
== R_SH_GOTFUNCDESC20
3619 || r_type
== R_SH_GOTOFFFUNCDESC
3620 || r_type
== R_SH_GOTOFFFUNCDESC20
3621 || r_type
== R_SH_FUNCDESC
3622 || r_type
== R_SH_GOT_LOW16
3623 || r_type
== R_SH_GOT_MEDLOW16
3624 || r_type
== R_SH_GOT_MEDHI16
3625 || r_type
== R_SH_GOT_HI16
)
3626 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
3627 bfd_link_pic (info
),
3629 && (! bfd_link_pic (info
)
3630 || (! info
->symbolic
&& h
->dynindx
!= -1)
3631 || !h
->def_regular
))
3632 /* The cases above are those in which relocation is
3633 overwritten in the switch block below. The cases
3634 below are those in which we must defer relocation
3635 to run-time, because we can't resolve absolute
3636 addresses when creating a shared library. */
3637 || (bfd_link_pic (info
)
3638 && ((! info
->symbolic
&& h
->dynindx
!= -1)
3640 && ((r_type
== R_SH_DIR32
3641 && !h
->forced_local
)
3642 || (r_type
== R_SH_REL32
3643 && !SYMBOL_CALLS_LOCAL (info
, h
)))
3644 && ((input_section
->flags
& SEC_ALLOC
) != 0
3645 /* DWARF will emit R_SH_DIR32 relocations in its
3646 sections against symbols defined externally
3647 in shared libraries. We can't do anything
3649 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
3650 && h
->def_dynamic
)))
3651 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3652 sections because such sections are not SEC_ALLOC and
3653 thus ld.so will not process them. */
3654 || (sec
->output_section
== NULL
3655 && ((input_section
->flags
& SEC_DEBUGGING
) != 0
3657 || (sec
->output_section
== NULL
3658 && (sh_elf_hash_entry (h
)->got_type
== GOT_TLS_IE
3659 || sh_elf_hash_entry (h
)->got_type
== GOT_TLS_GD
)))
3661 else if (sec
->output_section
!= NULL
)
3662 relocation
= (h
->root
.u
.def
.value
3663 + sec
->output_section
->vma
3664 + sec
->output_offset
);
3665 else if (!bfd_link_relocatable (info
)
3666 && (_bfd_elf_section_offset (output_bfd
, info
,
3672 /* xgettext:c-format */
3673 (_("%pB(%pA+%#" PRIx64
"): "
3674 "unresolvable %s relocation against symbol `%s'"),
3677 (uint64_t) rel
->r_offset
,
3679 h
->root
.root
.string
);
3683 else if (h
->root
.type
== bfd_link_hash_undefweak
)
3684 resolved_to_zero
= UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
);
3685 else if (info
->unresolved_syms_in_objects
== RM_IGNORE
3686 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
3688 else if (!bfd_link_relocatable (info
))
3689 info
->callbacks
->undefined_symbol
3690 (info
, h
->root
.root
.string
, input_bfd
, input_section
,
3692 (info
->unresolved_syms_in_objects
== RM_DIAGNOSE
3693 && !info
->warn_unresolved_syms
)
3694 || ELF_ST_VISIBILITY (h
->other
));
3697 if (sec
!= NULL
&& discarded_section (sec
))
3698 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
3699 rel
, 1, relend
, howto
, 0, contents
);
3701 if (bfd_link_relocatable (info
))
3704 /* Check for inter-segment relocations in FDPIC files. Most
3705 relocations connect the relocation site to the location of
3706 the target symbol, but there are some exceptions below. */
3707 check_segment
[0] = isec_segment
;
3709 check_segment
[1] = sh_elf_osec_to_segment (output_bfd
,
3710 sec
->output_section
);
3712 check_segment
[1] = -1;
3714 switch ((int) r_type
)
3716 final_link_relocate
:
3717 /* COFF relocs don't use the addend. The addend is used for
3718 R_SH_DIR32 to be compatible with other compilers. */
3719 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3720 contents
, rel
->r_offset
,
3721 relocation
, addend
);
3725 goto final_link_relocate
;
3730 /* If the reloc is against the start of this section, then
3731 the assembler has already taken care of it and the reloc
3732 is here only to assist in relaxing. If the reloc is not
3733 against the start of this section, then it's against an
3734 external symbol and we must deal with it ourselves. */
3735 if (input_section
->output_section
->vma
+ input_section
->output_offset
3738 int disp
= (relocation
3739 - input_section
->output_section
->vma
3740 - input_section
->output_offset
3746 case R_SH_DIR8WPZ
: mask
= 1; break;
3747 case R_SH_DIR8WPL
: mask
= 3; break;
3748 default: mask
= 0; break;
3753 /* xgettext:c-format */
3754 (_("%pB: %#" PRIx64
": fatal: "
3755 "unaligned branch target for relax-support relocation"),
3756 input_section
->owner
,
3757 (uint64_t) rel
->r_offset
);
3758 bfd_set_error (bfd_error_bad_value
);
3762 goto final_link_relocate
;
3768 bfd_set_error (bfd_error_bad_value
);
3776 goto final_link_relocate
;
3783 /* xgettext:c-format */
3784 (_("%pB: %#" PRIx64
": fatal: "
3785 "unaligned %s relocation %#" PRIx64
),
3786 input_section
->owner
, (uint64_t) rel
->r_offset
,
3787 howto
->name
, (uint64_t) relocation
);
3788 bfd_set_error (bfd_error_bad_value
);
3791 goto final_link_relocate
;
3799 /* xgettext:c-format */
3800 (_("%pB: %#" PRIx64
": fatal: "
3801 "unaligned %s relocation %#" PRIx64
""),
3802 input_section
->owner
,
3803 (uint64_t) rel
->r_offset
, howto
->name
,
3804 (uint64_t) relocation
);
3805 bfd_set_error (bfd_error_bad_value
);
3808 goto final_link_relocate
;
3811 if ((signed int)relocation
< -32
3812 || (signed int)relocation
> 32)
3815 /* xgettext:c-format */
3816 (_("%pB: %#" PRIx64
": fatal: R_SH_PSHA relocation %" PRId64
3817 " not in range -32..32"),
3818 input_section
->owner
,
3819 (uint64_t) rel
->r_offset
,
3820 (int64_t) relocation
);
3821 bfd_set_error (bfd_error_bad_value
);
3824 goto final_link_relocate
;
3827 if ((signed int)relocation
< -16
3828 || (signed int)relocation
> 16)
3831 /* xgettext:c-format */
3832 (_("%pB: %#" PRIx64
": fatal: R_SH_PSHL relocation %" PRId64
3833 " not in range -32..32"),
3834 input_section
->owner
,
3835 (uint64_t) rel
->r_offset
,
3836 (int64_t) relocation
);
3837 bfd_set_error (bfd_error_bad_value
);
3840 goto final_link_relocate
;
3844 if (bfd_link_pic (info
)
3846 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
3847 && !resolved_to_zero
)
3848 || h
->root
.type
!= bfd_link_hash_undefweak
)
3849 && r_symndx
!= STN_UNDEF
3850 && (input_section
->flags
& SEC_ALLOC
) != 0
3852 && (r_type
== R_SH_DIR32
3853 || !SYMBOL_CALLS_LOCAL (info
, h
)))
3855 Elf_Internal_Rela outrel
;
3857 bool skip
, relocate
;
3859 /* When generating a shared object, these relocations
3860 are copied into the output file to be resolved at run
3865 sreloc
= _bfd_elf_get_dynamic_reloc_section
3866 (input_bfd
, input_section
, /*rela?*/ true);
3875 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
3877 if (outrel
.r_offset
== (bfd_vma
) -1)
3879 else if (outrel
.r_offset
== (bfd_vma
) -2)
3880 skip
= true, relocate
= true;
3881 outrel
.r_offset
+= (input_section
->output_section
->vma
3882 + input_section
->output_offset
);
3885 memset (&outrel
, 0, sizeof outrel
);
3886 else if (r_type
== R_SH_REL32
)
3888 BFD_ASSERT (h
!= NULL
&& h
->dynindx
!= -1);
3889 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_REL32
);
3891 = (howto
->partial_inplace
3892 ? bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
)
3897 || ((info
->symbolic
|| h
->dynindx
== -1)
3898 && h
->def_regular
)))
3902 BFD_ASSERT (sec
!= NULL
);
3903 BFD_ASSERT (sec
->output_section
!= NULL
);
3904 dynindx
= elf_section_data (sec
->output_section
)->dynindx
;
3905 outrel
.r_info
= ELF32_R_INFO (dynindx
, R_SH_DIR32
);
3906 outrel
.r_addend
= relocation
;
3908 += (howto
->partial_inplace
3909 ? bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
)
3911 outrel
.r_addend
-= sec
->output_section
->vma
;
3915 /* h->dynindx may be -1 if this symbol was marked to
3918 || ((info
->symbolic
|| h
->dynindx
== -1)
3921 relocate
= howto
->partial_inplace
;
3922 outrel
.r_info
= ELF32_R_INFO (0, R_SH_RELATIVE
);
3926 BFD_ASSERT (h
->dynindx
!= -1);
3927 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_DIR32
);
3929 outrel
.r_addend
= relocation
;
3931 += (howto
->partial_inplace
3932 ? bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
)
3936 loc
= sreloc
->contents
;
3937 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3938 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
3940 check_segment
[0] = check_segment
[1] = -1;
3942 /* If this reloc is against an external symbol, we do
3943 not want to fiddle with the addend. Otherwise, we
3944 need to include the symbol value so that it becomes
3945 an addend for the dynamic reloc. */
3949 else if (fdpic_p
&& !bfd_link_pic (info
)
3950 && r_type
== R_SH_DIR32
3951 && (input_section
->flags
& SEC_ALLOC
) != 0)
3957 if (sh_elf_osec_readonly_p (output_bfd
,
3958 input_section
->output_section
))
3961 /* xgettext:c-format */
3962 (_("%pB(%pA+%#" PRIx64
"): "
3963 "cannot emit fixup to `%s' in read-only section"),
3966 (uint64_t) rel
->r_offset
,
3971 offset
= _bfd_elf_section_offset (output_bfd
, info
,
3972 input_section
, rel
->r_offset
);
3973 if (offset
!= (bfd_vma
)-1)
3974 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
3975 input_section
->output_section
->vma
3976 + input_section
->output_offset
3979 check_segment
[0] = check_segment
[1] = -1;
3981 /* We don't want warnings for non-NULL tests on undefined weak
3983 else if (r_type
== R_SH_REL32
3985 && h
->root
.type
== bfd_link_hash_undefweak
)
3986 check_segment
[0] = check_segment
[1] = -1;
3987 goto final_link_relocate
;
3990 /* Relocation is to the entry for this symbol in the
3991 procedure linkage table. */
3995 || ! bfd_link_pic (info
)
3998 || h
->plt
.offset
== (bfd_vma
) -1
3999 || h
->got
.offset
!= (bfd_vma
) -1)
4002 /* Relocation is to the entry for this symbol in the global
4003 offset table extension for the procedure linkage table. */
4006 BFD_ASSERT (sgotplt
!= NULL
);
4007 relocation
= (sgotplt
->output_offset
4008 + (get_plt_index (htab
->plt_info
, h
->plt
.offset
)
4012 relocation
-= GOT_BIAS
;
4015 goto final_link_relocate
;
4020 /* Relocation is to the entry for this symbol in the global
4024 BFD_ASSERT (sgot
!= NULL
);
4025 check_segment
[0] = check_segment
[1] = -1;
4031 off
= h
->got
.offset
;
4032 BFD_ASSERT (off
!= (bfd_vma
) -1);
4034 dyn
= htab
->root
.dynamic_sections_created
;
4035 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
4036 bfd_link_pic (info
),
4038 || (bfd_link_pic (info
)
4039 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4040 || ((ELF_ST_VISIBILITY (h
->other
)
4041 || resolved_to_zero
)
4042 && h
->root
.type
== bfd_link_hash_undefweak
))
4044 /* This is actually a static link, or it is a
4045 -Bsymbolic link and the symbol is defined
4046 locally, or the symbol was forced to be local
4047 because of a version file. We must initialize
4048 this entry in the global offset table. Since the
4049 offset must always be a multiple of 4, we use the
4050 least significant bit to record whether we have
4051 initialized it already.
4053 When doing a dynamic link, we create a .rela.got
4054 relocation entry to initialize the value. This
4055 is done in the finish_dynamic_symbol routine. */
4060 bfd_put_32 (output_bfd
, relocation
,
4061 sgot
->contents
+ off
);
4064 /* If we initialize the GOT entry here with a valid
4065 symbol address, also add a fixup. */
4066 if (fdpic_p
&& !bfd_link_pic (info
)
4067 && sh_elf_hash_entry (h
)->got_type
== GOT_NORMAL
4068 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
4069 || h
->root
.type
!= bfd_link_hash_undefweak
))
4070 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
4071 sgot
->output_section
->vma
4072 + sgot
->output_offset
4077 relocation
= sh_elf_got_offset (htab
) + off
;
4081 BFD_ASSERT (local_got_offsets
!= NULL
4082 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
4084 off
= local_got_offsets
[r_symndx
];
4086 /* The offset must always be a multiple of 4. We use
4087 the least significant bit to record whether we have
4088 already generated the necessary reloc. */
4093 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
4095 if (bfd_link_pic (info
))
4097 Elf_Internal_Rela outrel
;
4100 outrel
.r_offset
= (sgot
->output_section
->vma
4101 + sgot
->output_offset
4106 = elf_section_data (sec
->output_section
)->dynindx
;
4107 outrel
.r_info
= ELF32_R_INFO (dynindx
, R_SH_DIR32
);
4108 outrel
.r_addend
= relocation
;
4109 outrel
.r_addend
-= sec
->output_section
->vma
;
4113 outrel
.r_info
= ELF32_R_INFO (0, R_SH_RELATIVE
);
4114 outrel
.r_addend
= relocation
;
4116 loc
= srelgot
->contents
;
4117 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
4118 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4121 && (sh_elf_local_got_type (input_bfd
) [r_symndx
]
4123 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
4124 sgot
->output_section
->vma
4125 + sgot
->output_offset
4128 local_got_offsets
[r_symndx
] |= 1;
4131 relocation
= sh_elf_got_offset (htab
) + off
;
4135 relocation
-= GOT_BIAS
;
4138 if (r_type
== R_SH_GOT20
)
4140 r
= install_movi20_field (output_bfd
, relocation
+ addend
,
4141 input_bfd
, input_section
, contents
,
4146 goto final_link_relocate
;
4150 /* GOTOFF relocations are relative to _GLOBAL_OFFSET_TABLE_, which
4151 we place at the start of the .got.plt section. This is the same
4152 as the start of the output .got section, unless there are function
4153 descriptors in front of it. */
4155 BFD_ASSERT (sgotplt
!= NULL
);
4156 check_segment
[0] = got_segment
;
4157 relocation
-= sgotplt
->output_section
->vma
+ sgotplt
->output_offset
4158 + htab
->root
.hgot
->root
.u
.def
.value
;
4161 relocation
-= GOT_BIAS
;
4164 addend
= rel
->r_addend
;
4166 if (r_type
== R_SH_GOTOFF20
)
4168 r
= install_movi20_field (output_bfd
, relocation
+ addend
,
4169 input_bfd
, input_section
, contents
,
4174 goto final_link_relocate
;
4177 /* Use global offset table as symbol value. */
4179 BFD_ASSERT (sgotplt
!= NULL
);
4180 relocation
= sgotplt
->output_section
->vma
+ sgotplt
->output_offset
;
4183 relocation
+= GOT_BIAS
;
4186 addend
= rel
->r_addend
;
4188 goto final_link_relocate
;
4191 /* Relocation is to the entry for this symbol in the
4192 procedure linkage table. */
4194 /* Resolve a PLT reloc against a local symbol directly,
4195 without using the procedure linkage table. */
4197 goto final_link_relocate
;
4199 /* We don't want to warn on calls to undefined weak symbols,
4200 as calls to them must be protected by non-NULL tests
4201 anyway, and unprotected calls would invoke undefined
4203 if (h
->root
.type
== bfd_link_hash_undefweak
)
4204 check_segment
[0] = check_segment
[1] = -1;
4206 if (h
->forced_local
)
4207 goto final_link_relocate
;
4209 if (h
->plt
.offset
== (bfd_vma
) -1)
4211 /* We didn't make a PLT entry for this symbol. This
4212 happens when statically linking PIC code, or when
4213 using -Bsymbolic. */
4214 goto final_link_relocate
;
4217 BFD_ASSERT (splt
!= NULL
);
4218 check_segment
[1] = plt_segment
;
4219 relocation
= (splt
->output_section
->vma
4220 + splt
->output_offset
4223 addend
= rel
->r_addend
;
4225 goto final_link_relocate
;
4227 /* Relocation is to the canonical function descriptor for this
4228 symbol, possibly via the GOT. Initialize the GOT
4229 entry and function descriptor if necessary. */
4230 case R_SH_GOTFUNCDESC
:
4231 case R_SH_GOTFUNCDESC20
:
4235 asection
*reloc_section
;
4236 bfd_vma reloc_offset
;
4237 int reloc_type
= R_SH_FUNCDESC
;
4241 check_segment
[0] = check_segment
[1] = -1;
4243 /* FIXME: See what FRV does for global symbols in the
4244 executable, with --export-dynamic. Do they need ld.so
4245 to allocate official descriptors? See what this code
4251 if (r_type
== R_SH_FUNCDESC
)
4253 reloc_section
= input_section
;
4254 reloc_offset
= rel
->r_offset
;
4258 reloc_section
= sgot
;
4261 reloc_offset
= h
->got
.offset
;
4264 BFD_ASSERT (local_got_offsets
!= NULL
);
4265 reloc_offset
= local_got_offsets
[r_symndx
];
4267 BFD_ASSERT (reloc_offset
!= MINUS_ONE
);
4269 if (reloc_offset
& 1)
4272 goto funcdesc_done_got
;
4276 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
4277 && (SYMBOL_CALLS_LOCAL (info
, h
)
4278 || !htab
->root
.dynamic_sections_created
))
4279 /* Undefined weak symbol which will not be dynamically
4280 resolved later; leave it at zero. */
4281 goto funcdesc_leave_zero
;
4282 else if (SYMBOL_CALLS_LOCAL (info
, h
)
4283 && ! SYMBOL_FUNCDESC_LOCAL (info
, h
))
4285 /* If the symbol needs a non-local function descriptor
4286 but binds locally (i.e., its visibility is
4287 protected), emit a dynamic relocation decayed to
4288 section+offset. This is an optimization; the dynamic
4289 linker would resolve our function descriptor request
4290 to our copy of the function anyway. */
4291 dynindx
= elf_section_data (h
->root
.u
.def
.section
4292 ->output_section
)->dynindx
;
4293 relocation
+= h
->root
.u
.def
.section
->output_offset
4294 + h
->root
.u
.def
.value
;
4296 else if (! SYMBOL_FUNCDESC_LOCAL (info
, h
))
4298 /* If the symbol is dynamic and there will be dynamic
4299 symbol resolution because we are or are linked with a
4300 shared library, emit a FUNCDESC relocation such that
4301 the dynamic linker will allocate the function
4303 BFD_ASSERT (h
->dynindx
!= -1);
4304 dynindx
= h
->dynindx
;
4310 /* Otherwise, we know we have a private function
4311 descriptor, so reference it directly. */
4312 reloc_type
= R_SH_DIR32
;
4313 dynindx
= elf_section_data (htab
->sfuncdesc
4314 ->output_section
)->dynindx
;
4318 offset
= sh_elf_hash_entry (h
)->funcdesc
.offset
;
4319 BFD_ASSERT (offset
!= MINUS_ONE
);
4320 if ((offset
& 1) == 0)
4322 if (!sh_elf_initialize_funcdesc (output_bfd
, info
, h
,
4325 sh_elf_hash_entry (h
)->funcdesc
.offset
|= 1;
4330 union gotref
*local_funcdesc
;
4332 local_funcdesc
= sh_elf_local_funcdesc (input_bfd
);
4333 offset
= local_funcdesc
[r_symndx
].offset
;
4334 BFD_ASSERT (offset
!= MINUS_ONE
);
4335 if ((offset
& 1) == 0)
4337 if (!sh_elf_initialize_funcdesc (output_bfd
, info
, NULL
,
4341 local_funcdesc
[r_symndx
].offset
|= 1;
4345 relocation
= htab
->sfuncdesc
->output_offset
+ (offset
& ~1);
4348 if (!bfd_link_pic (info
) && SYMBOL_FUNCDESC_LOCAL (info
, h
))
4352 if (sh_elf_osec_readonly_p (output_bfd
,
4353 reloc_section
->output_section
))
4356 /* xgettext:c-format */
4357 (_("%pB(%pA+%#" PRIx64
"): "
4358 "cannot emit fixup to `%s' in read-only section"),
4361 (uint64_t) rel
->r_offset
,
4366 offset
= _bfd_elf_section_offset (output_bfd
, info
,
4367 reloc_section
, reloc_offset
);
4369 if (offset
!= (bfd_vma
)-1)
4370 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
,
4372 + reloc_section
->output_section
->vma
4373 + reloc_section
->output_offset
);
4375 else if ((reloc_section
->output_section
->flags
4376 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
4380 if (sh_elf_osec_readonly_p (output_bfd
,
4381 reloc_section
->output_section
))
4383 info
->callbacks
->warning
4385 _("cannot emit dynamic relocations in read-only section"),
4386 symname
, input_bfd
, reloc_section
, reloc_offset
);
4390 offset
= _bfd_elf_section_offset (output_bfd
, info
,
4391 reloc_section
, reloc_offset
);
4393 if (offset
!= (bfd_vma
)-1)
4394 sh_elf_add_dyn_reloc (output_bfd
, srelgot
,
4396 + reloc_section
->output_section
->vma
4397 + reloc_section
->output_offset
,
4398 reloc_type
, dynindx
, relocation
);
4400 if (r_type
== R_SH_FUNCDESC
)
4408 goto funcdesc_leave_zero
;
4412 if (SYMBOL_FUNCDESC_LOCAL (info
, h
))
4413 relocation
+= htab
->sfuncdesc
->output_section
->vma
;
4414 funcdesc_leave_zero
:
4415 if (r_type
!= R_SH_FUNCDESC
)
4417 bfd_put_32 (output_bfd
, relocation
,
4418 reloc_section
->contents
+ reloc_offset
);
4422 local_got_offsets
[r_symndx
] |= 1;
4426 relocation
= sh_elf_got_offset (htab
) + reloc_offset
;
4428 relocation
-= GOT_BIAS
;
4431 if (r_type
== R_SH_GOTFUNCDESC20
)
4433 r
= install_movi20_field (output_bfd
, relocation
+ addend
,
4434 input_bfd
, input_section
, contents
,
4439 goto final_link_relocate
;
4443 case R_SH_GOTOFFFUNCDESC
:
4444 case R_SH_GOTOFFFUNCDESC20
:
4445 /* FIXME: See R_SH_FUNCDESC comment about global symbols in the
4446 executable and --export-dynamic. If such symbols get
4447 ld.so-allocated descriptors we can not use R_SH_GOTOFFFUNCDESC
4451 check_segment
[0] = check_segment
[1] = -1;
4453 addend
= rel
->r_addend
;
4455 if (h
&& (h
->root
.type
== bfd_link_hash_undefweak
4456 || !SYMBOL_FUNCDESC_LOCAL (info
, h
)))
4459 /* xgettext:c-format */
4460 (_("%pB(%pA+%#" PRIx64
"): "
4461 "%s relocation against external symbol \"%s\""),
4462 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
4463 howto
->name
, h
->root
.root
.string
);
4470 /* Otherwise, we know we have a private function
4471 descriptor, so reference it directly. */
4474 offset
= sh_elf_hash_entry (h
)->funcdesc
.offset
;
4475 BFD_ASSERT (offset
!= MINUS_ONE
);
4476 if ((offset
& 1) == 0)
4478 if (!sh_elf_initialize_funcdesc (output_bfd
, info
, h
,
4481 sh_elf_hash_entry (h
)->funcdesc
.offset
|= 1;
4486 union gotref
*local_funcdesc
;
4488 local_funcdesc
= sh_elf_local_funcdesc (input_bfd
);
4489 offset
= local_funcdesc
[r_symndx
].offset
;
4490 BFD_ASSERT (offset
!= MINUS_ONE
);
4491 if ((offset
& 1) == 0)
4493 if (!sh_elf_initialize_funcdesc (output_bfd
, info
, NULL
,
4497 local_funcdesc
[r_symndx
].offset
|= 1;
4501 relocation
= htab
->sfuncdesc
->output_offset
+ (offset
& ~1);
4504 relocation
-= (htab
->root
.hgot
->root
.u
.def
.value
4505 + sgotplt
->output_offset
);
4507 relocation
-= GOT_BIAS
;
4510 if (r_type
== R_SH_GOTOFFFUNCDESC20
)
4512 r
= install_movi20_field (output_bfd
, relocation
+ addend
,
4513 input_bfd
, input_section
, contents
,
4518 goto final_link_relocate
;
4520 case R_SH_LOOP_START
:
4522 static bfd_vma start
, end
;
4524 start
= (relocation
+ rel
->r_addend
4525 - (sec
->output_section
->vma
+ sec
->output_offset
));
4526 r
= sh_elf_reloc_loop (r_type
, input_bfd
, input_section
, contents
,
4527 rel
->r_offset
, sec
, start
, end
);
4531 end
= (relocation
+ rel
->r_addend
4532 - (sec
->output_section
->vma
+ sec
->output_offset
));
4533 r
= sh_elf_reloc_loop (r_type
, input_bfd
, input_section
, contents
,
4534 rel
->r_offset
, sec
, start
, end
);
4538 case R_SH_TLS_GD_32
:
4539 case R_SH_TLS_IE_32
:
4541 check_segment
[0] = check_segment
[1] = -1;
4542 r_type
= sh_elf_optimized_tls_reloc (info
, r_type
, h
== NULL
);
4543 got_type
= GOT_UNKNOWN
;
4544 if (h
== NULL
&& local_got_offsets
)
4545 got_type
= sh_elf_local_got_type (input_bfd
) [r_symndx
];
4548 got_type
= sh_elf_hash_entry (h
)->got_type
;
4549 if (! bfd_link_pic (info
)
4550 && (h
->dynindx
== -1
4552 r_type
= R_SH_TLS_LE_32
;
4555 if (r_type
== R_SH_TLS_GD_32
&& got_type
== GOT_TLS_IE
)
4556 r_type
= R_SH_TLS_IE_32
;
4558 if (r_type
== R_SH_TLS_LE_32
)
4561 unsigned short insn
;
4563 if (ELF32_R_TYPE (rel
->r_info
) == R_SH_TLS_GD_32
)
4565 /* GD->LE transition:
4566 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4567 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4568 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4570 mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4572 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */
4574 offset
= rel
->r_offset
;
4578 /* xgettext:c-format */
4579 (_("%pB(%pA): offset in relocation for GD->LE translation is too small: %#" PRIx64
),
4580 input_bfd
, input_section
, (uint64_t) offset
);
4584 /* Size of GD instructions is 16 or 18. */
4586 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4587 if ((insn
& 0xff00) == 0xc700)
4589 BFD_ASSERT (offset
>= 2);
4591 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4594 if ((insn
& 0xff00) != 0xd400)
4596 /* xgettext:c-format */ /* The backslash is to prevent bogus trigraph detection. */
4597 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0xd4?\?)"),
4598 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4600 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 2);
4602 if ((insn
& 0xff00) != 0xc700)
4604 /* xgettext:c-format */
4605 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0xc7?\?)"),
4606 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4608 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 4);
4609 if ((insn
& 0xff00) != 0xd100)
4611 /* xgettext:c-format */
4612 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0xd1?\?)"),
4613 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4615 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 6);
4618 /* xgettext:c-format */
4619 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x310c)"),
4620 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4622 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 8);
4625 /* xgettext:c-format */
4626 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x410b)"),
4627 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4629 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 10);
4632 /* xgettext:c-format */
4633 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x34cc)"),
4634 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4636 bfd_put_16 (output_bfd
, 0x0012, contents
+ offset
+ 2);
4637 bfd_put_16 (output_bfd
, 0x304c, contents
+ offset
+ 4);
4638 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 6);
4639 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 8);
4640 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 10);
4646 /* IE->LE transition:
4663 offset
= rel
->r_offset
;
4667 /* xgettext:c-format */
4668 (_("%pB(%pA): offset in relocation for IE->LE translation is too small: %#" PRIx64
),
4669 input_bfd
, input_section
, (uint64_t) offset
);
4673 /* Size of IE instructions is 10 or 12. */
4675 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4676 if ((insn
& 0xf0ff) == 0x0012)
4678 BFD_ASSERT (offset
>= 2);
4680 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4683 if ((insn
& 0xff00) != 0xd000)
4685 /* xgettext:c-format */
4686 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0xd0??: mov.l)"),
4687 input_bfd
, input_section
, (uint64_t) offset
, (int) insn
);
4689 target
= insn
& 0x00ff;
4691 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 2);
4692 if ((insn
& 0xf0ff) != 0x0012)
4694 /* xgettext:c-format */
4695 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x0?12: stc)"),
4696 input_bfd
, input_section
, (uint64_t) (offset
+ 2), (int) insn
);
4698 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 4);
4699 if ((insn
& 0xf0ff) != 0x00ce)
4701 /* xgettext:c-format */
4702 (_("%pB(%pA+%#" PRIx64
"): unexpected instruction %#04X (expected 0x0?ce: mov.l)"),
4703 input_bfd
, input_section
, (uint64_t) (offset
+ 4), (int) insn
);
4705 insn
= 0xd000 | (insn
& 0x0f00) | target
;
4706 bfd_put_16 (output_bfd
, insn
, contents
+ offset
+ 0);
4707 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 4);
4710 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
4711 contents
+ rel
->r_offset
);
4715 if (sgot
== NULL
|| sgotplt
== NULL
)
4719 off
= h
->got
.offset
;
4722 if (local_got_offsets
== NULL
)
4725 off
= local_got_offsets
[r_symndx
];
4728 /* Relocate R_SH_TLS_IE_32 directly when statically linking. */
4729 if (r_type
== R_SH_TLS_IE_32
4730 && ! htab
->root
.dynamic_sections_created
)
4733 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
4734 sgot
->contents
+ off
);
4735 bfd_put_32 (output_bfd
, sh_elf_got_offset (htab
) + off
,
4736 contents
+ rel
->r_offset
);
4744 Elf_Internal_Rela outrel
;
4748 outrel
.r_offset
= (sgot
->output_section
->vma
4749 + sgot
->output_offset
+ off
);
4751 if (h
== NULL
|| h
->dynindx
== -1)
4756 dr_type
= (r_type
== R_SH_TLS_GD_32
? R_SH_TLS_DTPMOD32
:
4758 if (dr_type
== R_SH_TLS_TPOFF32
&& indx
== 0)
4759 outrel
.r_addend
= relocation
- dtpoff_base (info
);
4761 outrel
.r_addend
= 0;
4762 outrel
.r_info
= ELF32_R_INFO (indx
, dr_type
);
4763 loc
= srelgot
->contents
;
4764 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
4765 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4767 if (r_type
== R_SH_TLS_GD_32
)
4771 bfd_put_32 (output_bfd
,
4772 relocation
- dtpoff_base (info
),
4773 sgot
->contents
+ off
+ 4);
4777 outrel
.r_info
= ELF32_R_INFO (indx
,
4779 outrel
.r_offset
+= 4;
4780 outrel
.r_addend
= 0;
4781 srelgot
->reloc_count
++;
4782 loc
+= sizeof (Elf32_External_Rela
);
4783 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4790 local_got_offsets
[r_symndx
] |= 1;
4793 if (off
>= (bfd_vma
) -2)
4796 if (r_type
== (int) ELF32_R_TYPE (rel
->r_info
))
4797 relocation
= sh_elf_got_offset (htab
) + off
;
4801 unsigned short insn
;
4803 /* GD->IE transition:
4804 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4805 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4806 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4808 mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4809 nop; nop; bra 3f; nop; .align 2;
4810 1: .long x@TPOFF; 2:...; 3:. */
4812 offset
= rel
->r_offset
;
4816 /* xgettext:c-format */
4817 (_("%pB(%pA): offset in relocation for GD->IE translation is too small: %#" PRIx64
),
4818 input_bfd
, input_section
, (uint64_t) offset
);
4822 /* Size of GD instructions is 16 or 18. */
4824 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4825 if ((insn
& 0xff00) == 0xc700)
4827 BFD_ASSERT (offset
>= 2);
4829 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4832 BFD_ASSERT ((insn
& 0xff00) == 0xd400);
4834 /* Replace mov.l 1f,R4 with mov.l 1f,r0. */
4835 bfd_put_16 (output_bfd
, insn
& 0xf0ff, contents
+ offset
);
4837 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 2);
4838 BFD_ASSERT ((insn
& 0xff00) == 0xc700);
4839 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 4);
4840 BFD_ASSERT ((insn
& 0xff00) == 0xd100);
4841 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 6);
4842 BFD_ASSERT (insn
== 0x310c);
4843 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 8);
4844 BFD_ASSERT (insn
== 0x410b);
4845 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 10);
4846 BFD_ASSERT (insn
== 0x34cc);
4848 bfd_put_16 (output_bfd
, 0x0412, contents
+ offset
+ 2);
4849 bfd_put_16 (output_bfd
, 0x00ce, contents
+ offset
+ 4);
4850 bfd_put_16 (output_bfd
, 0x304c, contents
+ offset
+ 6);
4851 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 8);
4852 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 10);
4854 bfd_put_32 (output_bfd
, sh_elf_got_offset (htab
) + off
,
4855 contents
+ rel
->r_offset
);
4860 addend
= rel
->r_addend
;
4862 goto final_link_relocate
;
4864 case R_SH_TLS_LD_32
:
4866 check_segment
[0] = check_segment
[1] = -1;
4867 if (! bfd_link_pic (info
))
4870 unsigned short insn
;
4872 /* LD->LE transition:
4873 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4874 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4875 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4877 stc gbr,r0; nop; nop; nop;
4878 nop; nop; bra 3f; ...; 3:. */
4880 offset
= rel
->r_offset
;
4884 /* xgettext:c-format */
4885 (_("%pB(%pA): offset in relocation for LD->LE translation is too small: %#" PRIx64
),
4886 input_bfd
, input_section
, (uint64_t) offset
);
4890 /* Size of LD instructions is 16 or 18. */
4892 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4893 if ((insn
& 0xff00) == 0xc700)
4895 BFD_ASSERT (offset
>= 2);
4897 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 0);
4900 BFD_ASSERT ((insn
& 0xff00) == 0xd400);
4901 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 2);
4902 BFD_ASSERT ((insn
& 0xff00) == 0xc700);
4903 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 4);
4904 BFD_ASSERT ((insn
& 0xff00) == 0xd100);
4905 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 6);
4906 BFD_ASSERT (insn
== 0x310c);
4907 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 8);
4908 BFD_ASSERT (insn
== 0x410b);
4909 insn
= bfd_get_16 (input_bfd
, contents
+ offset
+ 10);
4910 BFD_ASSERT (insn
== 0x34cc);
4912 bfd_put_16 (output_bfd
, 0x0012, contents
+ offset
+ 0);
4913 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 2);
4914 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 4);
4915 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 6);
4916 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 8);
4917 bfd_put_16 (output_bfd
, 0x0009, contents
+ offset
+ 10);
4922 if (sgot
== NULL
|| sgotplt
== NULL
)
4925 off
= htab
->tls_ldm_got
.offset
;
4930 Elf_Internal_Rela outrel
;
4933 outrel
.r_offset
= (sgot
->output_section
->vma
4934 + sgot
->output_offset
+ off
);
4935 outrel
.r_addend
= 0;
4936 outrel
.r_info
= ELF32_R_INFO (0, R_SH_TLS_DTPMOD32
);
4937 loc
= srelgot
->contents
;
4938 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
4939 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4940 htab
->tls_ldm_got
.offset
|= 1;
4943 relocation
= sh_elf_got_offset (htab
) + off
;
4944 addend
= rel
->r_addend
;
4946 goto final_link_relocate
;
4948 case R_SH_TLS_LDO_32
:
4949 check_segment
[0] = check_segment
[1] = -1;
4950 if (! bfd_link_pic (info
))
4951 relocation
= tpoff (info
, relocation
);
4953 relocation
-= dtpoff_base (info
);
4955 addend
= rel
->r_addend
;
4956 goto final_link_relocate
;
4958 case R_SH_TLS_LE_32
:
4961 Elf_Internal_Rela outrel
;
4964 check_segment
[0] = check_segment
[1] = -1;
4966 if (!bfd_link_dll (info
))
4968 relocation
= tpoff (info
, relocation
);
4969 addend
= rel
->r_addend
;
4970 goto final_link_relocate
;
4975 sreloc
= _bfd_elf_get_dynamic_reloc_section
4976 (input_bfd
, input_section
, /*rela?*/ true);
4981 if (h
== NULL
|| h
->dynindx
== -1)
4986 outrel
.r_offset
= (input_section
->output_section
->vma
4987 + input_section
->output_offset
4989 outrel
.r_info
= ELF32_R_INFO (indx
, R_SH_TLS_TPOFF32
);
4991 outrel
.r_addend
= relocation
- dtpoff_base (info
);
4993 outrel
.r_addend
= 0;
4995 loc
= sreloc
->contents
;
4996 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
4997 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
5003 if (fdpic_p
&& check_segment
[0] != (unsigned) -1
5004 && check_segment
[0] != check_segment
[1])
5006 /* We don't want duplicate errors for undefined symbols. */
5007 if (!h
|| h
->root
.type
!= bfd_link_hash_undefined
)
5009 if (bfd_link_pic (info
))
5011 info
->callbacks
->einfo
5012 /* xgettext:c-format */
5013 (_("%X%H: relocation to \"%s\" references a different segment\n"),
5014 input_bfd
, input_section
, rel
->r_offset
, symname
);
5018 info
->callbacks
->einfo
5019 /* xgettext:c-format */
5020 (_("%H: warning: relocation to \"%s\" references a different segment\n"),
5021 input_bfd
, input_section
, rel
->r_offset
, symname
);
5024 elf_elfheader (output_bfd
)->e_flags
|= EF_SH_PIC
;
5027 if (r
!= bfd_reloc_ok
)
5032 case bfd_reloc_outofrange
:
5034 case bfd_reloc_overflow
:
5042 name
= (bfd_elf_string_from_elf_section
5043 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
5047 name
= bfd_section_name (sec
);
5049 (*info
->callbacks
->reloc_overflow
)
5050 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
5051 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
5061 /* This is a version of bfd_generic_get_relocated_section_contents
5062 which uses sh_elf_relocate_section. */
5065 sh_elf_get_relocated_section_contents (bfd
*output_bfd
,
5066 struct bfd_link_info
*link_info
,
5067 struct bfd_link_order
*link_order
,
5072 Elf_Internal_Shdr
*symtab_hdr
;
5073 asection
*input_section
= link_order
->u
.indirect
.section
;
5074 bfd
*input_bfd
= input_section
->owner
;
5075 asection
**sections
= NULL
;
5076 Elf_Internal_Rela
*internal_relocs
= NULL
;
5077 Elf_Internal_Sym
*isymbuf
= NULL
;
5079 /* We only need to handle the case of relaxing, or of having a
5080 particular set of section contents, specially. */
5082 || elf_section_data (input_section
)->this_hdr
.contents
== NULL
)
5083 return bfd_generic_get_relocated_section_contents (output_bfd
, link_info
,
5088 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
5090 bfd_byte
*orig_data
= data
;
5093 data
= bfd_malloc (input_section
->size
);
5097 memcpy (data
, elf_section_data (input_section
)->this_hdr
.contents
,
5098 (size_t) input_section
->size
);
5100 if ((input_section
->flags
& SEC_RELOC
) != 0
5101 && input_section
->reloc_count
> 0)
5104 Elf_Internal_Sym
*isym
, *isymend
;
5107 internal_relocs
= (_bfd_elf_link_read_relocs
5108 (input_bfd
, input_section
, NULL
,
5109 (Elf_Internal_Rela
*) NULL
, false));
5110 if (internal_relocs
== NULL
)
5113 if (symtab_hdr
->sh_info
!= 0)
5115 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5116 if (isymbuf
== NULL
)
5117 isymbuf
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
5118 symtab_hdr
->sh_info
, 0,
5120 if (isymbuf
== NULL
)
5124 amt
= symtab_hdr
->sh_info
;
5125 amt
*= sizeof (asection
*);
5126 sections
= (asection
**) bfd_malloc (amt
);
5127 if (sections
== NULL
&& amt
!= 0)
5130 isymend
= isymbuf
+ symtab_hdr
->sh_info
;
5131 for (isym
= isymbuf
, secpp
= sections
; isym
< isymend
; ++isym
, ++secpp
)
5135 if (isym
->st_shndx
== SHN_UNDEF
)
5136 isec
= bfd_und_section_ptr
;
5137 else if (isym
->st_shndx
== SHN_ABS
)
5138 isec
= bfd_abs_section_ptr
;
5139 else if (isym
->st_shndx
== SHN_COMMON
)
5140 isec
= bfd_com_section_ptr
;
5142 isec
= bfd_section_from_elf_index (input_bfd
, isym
->st_shndx
);
5147 if (! sh_elf_relocate_section (output_bfd
, link_info
, input_bfd
,
5148 input_section
, data
, internal_relocs
,
5153 if (symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5155 if (elf_section_data (input_section
)->relocs
!= internal_relocs
)
5156 free (internal_relocs
);
5163 if (symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5165 if (elf_section_data (input_section
)->relocs
!= internal_relocs
)
5166 free (internal_relocs
);
5167 if (orig_data
== NULL
)
5172 /* Return the base VMA address which should be subtracted from real addresses
5173 when resolving @dtpoff relocation.
5174 This is PT_TLS segment p_vaddr. */
5177 dtpoff_base (struct bfd_link_info
*info
)
5179 /* If tls_sec is NULL, we should have signalled an error already. */
5180 if (elf_hash_table (info
)->tls_sec
== NULL
)
5182 return elf_hash_table (info
)->tls_sec
->vma
;
5185 /* Return the relocation value for R_SH_TLS_TPOFF32.. */
5188 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
5190 /* If tls_sec is NULL, we should have signalled an error already. */
5191 if (elf_hash_table (info
)->tls_sec
== NULL
)
5193 /* SH TLS ABI is variant I and static TLS block start just after tcbhead
5194 structure which has 2 pointer fields. */
5195 return (address
- elf_hash_table (info
)->tls_sec
->vma
5196 + align_power ((bfd_vma
) 8,
5197 elf_hash_table (info
)->tls_sec
->alignment_power
));
5201 sh_elf_gc_mark_hook (asection
*sec
,
5202 struct bfd_link_info
*info
,
5203 Elf_Internal_Rela
*rel
,
5204 struct elf_link_hash_entry
*h
,
5205 Elf_Internal_Sym
*sym
)
5208 switch (ELF32_R_TYPE (rel
->r_info
))
5210 case R_SH_GNU_VTINHERIT
:
5211 case R_SH_GNU_VTENTRY
:
5215 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5218 /* Copy the extra info we tack onto an elf_link_hash_entry. */
5221 sh_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
5222 struct elf_link_hash_entry
*dir
,
5223 struct elf_link_hash_entry
*ind
)
5225 struct elf_sh_link_hash_entry
*edir
, *eind
;
5227 edir
= (struct elf_sh_link_hash_entry
*) dir
;
5228 eind
= (struct elf_sh_link_hash_entry
*) ind
;
5230 edir
->gotplt_refcount
= eind
->gotplt_refcount
;
5231 eind
->gotplt_refcount
= 0;
5232 edir
->funcdesc
.refcount
+= eind
->funcdesc
.refcount
;
5233 eind
->funcdesc
.refcount
= 0;
5234 edir
->abs_funcdesc_refcount
+= eind
->abs_funcdesc_refcount
;
5235 eind
->abs_funcdesc_refcount
= 0;
5237 if (ind
->root
.type
== bfd_link_hash_indirect
5238 && dir
->got
.refcount
<= 0)
5240 edir
->got_type
= eind
->got_type
;
5241 eind
->got_type
= GOT_UNKNOWN
;
5244 if (ind
->root
.type
!= bfd_link_hash_indirect
5245 && dir
->dynamic_adjusted
)
5247 /* If called to transfer flags for a weakdef during processing
5248 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
5249 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
5250 if (dir
->versioned
!= versioned_hidden
)
5251 dir
->ref_dynamic
|= ind
->ref_dynamic
;
5252 dir
->ref_regular
|= ind
->ref_regular
;
5253 dir
->ref_regular_nonweak
|= ind
->ref_regular_nonweak
;
5254 dir
->needs_plt
|= ind
->needs_plt
;
5257 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
5261 sh_elf_optimized_tls_reloc (struct bfd_link_info
*info
, int r_type
,
5264 if (bfd_link_pic (info
))
5269 case R_SH_TLS_GD_32
:
5270 case R_SH_TLS_IE_32
:
5272 return R_SH_TLS_LE_32
;
5273 return R_SH_TLS_IE_32
;
5274 case R_SH_TLS_LD_32
:
5275 return R_SH_TLS_LE_32
;
5281 /* Look through the relocs for a section during the first phase.
5282 Since we don't do .gots or .plts, we just need to consider the
5283 virtual table relocs for gc. */
5286 sh_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
, asection
*sec
,
5287 const Elf_Internal_Rela
*relocs
)
5289 Elf_Internal_Shdr
*symtab_hdr
;
5290 struct elf_link_hash_entry
**sym_hashes
;
5291 struct elf_sh_link_hash_table
*htab
;
5292 const Elf_Internal_Rela
*rel
;
5293 const Elf_Internal_Rela
*rel_end
;
5295 unsigned int r_type
;
5296 enum got_type got_type
, old_got_type
;
5300 if (bfd_link_relocatable (info
))
5303 BFD_ASSERT (is_sh_elf (abfd
));
5305 symtab_hdr
= &elf_symtab_hdr (abfd
);
5306 sym_hashes
= elf_sym_hashes (abfd
);
5308 htab
= sh_elf_hash_table (info
);
5312 rel_end
= relocs
+ sec
->reloc_count
;
5313 for (rel
= relocs
; rel
< rel_end
; rel
++)
5315 struct elf_link_hash_entry
*h
;
5316 unsigned long r_symndx
;
5318 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5319 r_type
= ELF32_R_TYPE (rel
->r_info
);
5321 if (r_symndx
< symtab_hdr
->sh_info
)
5325 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5326 while (h
->root
.type
== bfd_link_hash_indirect
5327 || h
->root
.type
== bfd_link_hash_warning
)
5328 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5331 r_type
= sh_elf_optimized_tls_reloc (info
, r_type
, h
== NULL
);
5332 if (! bfd_link_pic (info
)
5333 && r_type
== R_SH_TLS_IE_32
5335 && h
->root
.type
!= bfd_link_hash_undefined
5336 && h
->root
.type
!= bfd_link_hash_undefweak
5337 && (h
->dynindx
== -1
5339 r_type
= R_SH_TLS_LE_32
;
5344 case R_SH_GOTOFFFUNCDESC
:
5345 case R_SH_GOTOFFFUNCDESC20
:
5347 case R_SH_GOTFUNCDESC
:
5348 case R_SH_GOTFUNCDESC20
:
5351 if (h
->dynindx
== -1)
5352 switch (ELF_ST_VISIBILITY (h
->other
))
5358 bfd_elf_link_record_dynamic_symbol (info
, h
);
5365 /* Some relocs require a global offset table. */
5366 if (htab
->root
.sgot
== NULL
)
5371 /* This may require an rofixup. */
5381 case R_SH_GOTFUNCDESC
:
5382 case R_SH_GOTFUNCDESC20
:
5383 case R_SH_GOTOFFFUNCDESC
:
5384 case R_SH_GOTOFFFUNCDESC20
:
5386 case R_SH_TLS_GD_32
:
5387 case R_SH_TLS_LD_32
:
5388 case R_SH_TLS_IE_32
:
5389 if (htab
->root
.dynobj
== NULL
)
5390 htab
->root
.dynobj
= abfd
;
5391 if (!create_got_section (htab
->root
.dynobj
, info
))
5402 /* This relocation describes the C++ object vtable hierarchy.
5403 Reconstruct it for later use during GC. */
5404 case R_SH_GNU_VTINHERIT
:
5405 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5409 /* This relocation describes which C++ vtable entries are actually
5410 used. Record for later use during GC. */
5411 case R_SH_GNU_VTENTRY
:
5412 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5416 case R_SH_TLS_IE_32
:
5417 if (bfd_link_pic (info
))
5418 info
->flags
|= DF_STATIC_TLS
;
5422 case R_SH_TLS_GD_32
:
5425 case R_SH_GOTFUNCDESC
:
5426 case R_SH_GOTFUNCDESC20
:
5430 got_type
= GOT_NORMAL
;
5432 case R_SH_TLS_GD_32
:
5433 got_type
= GOT_TLS_GD
;
5435 case R_SH_TLS_IE_32
:
5436 got_type
= GOT_TLS_IE
;
5438 case R_SH_GOTFUNCDESC
:
5439 case R_SH_GOTFUNCDESC20
:
5440 got_type
= GOT_FUNCDESC
;
5446 h
->got
.refcount
+= 1;
5447 old_got_type
= sh_elf_hash_entry (h
)->got_type
;
5451 bfd_signed_vma
*local_got_refcounts
;
5453 /* This is a global offset table entry for a local
5455 local_got_refcounts
= elf_local_got_refcounts (abfd
);
5456 if (local_got_refcounts
== NULL
)
5460 size
= symtab_hdr
->sh_info
;
5461 size
*= sizeof (bfd_signed_vma
);
5462 size
+= symtab_hdr
->sh_info
;
5463 local_got_refcounts
= ((bfd_signed_vma
*)
5464 bfd_zalloc (abfd
, size
));
5465 if (local_got_refcounts
== NULL
)
5467 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
5468 sh_elf_local_got_type (abfd
)
5469 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
5471 local_got_refcounts
[r_symndx
] += 1;
5472 old_got_type
= sh_elf_local_got_type (abfd
) [r_symndx
];
5475 /* If a TLS symbol is accessed using IE at least once,
5476 there is no point to use dynamic model for it. */
5477 if (old_got_type
!= got_type
&& old_got_type
!= GOT_UNKNOWN
5478 && (old_got_type
!= GOT_TLS_GD
|| got_type
!= GOT_TLS_IE
))
5480 if (old_got_type
== GOT_TLS_IE
&& got_type
== GOT_TLS_GD
)
5481 got_type
= GOT_TLS_IE
;
5484 if ((old_got_type
== GOT_FUNCDESC
|| got_type
== GOT_FUNCDESC
)
5485 && (old_got_type
== GOT_NORMAL
|| got_type
== GOT_NORMAL
))
5487 /* xgettext:c-format */
5488 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5489 abfd
, h
->root
.root
.string
);
5490 else if (old_got_type
== GOT_FUNCDESC
5491 || got_type
== GOT_FUNCDESC
)
5493 /* xgettext:c-format */
5494 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5495 abfd
, h
->root
.root
.string
);
5498 /* xgettext:c-format */
5499 (_("%pB: `%s' accessed both as normal and thread local symbol"),
5500 abfd
, h
->root
.root
.string
);
5505 if (old_got_type
!= got_type
)
5508 sh_elf_hash_entry (h
)->got_type
= got_type
;
5510 sh_elf_local_got_type (abfd
) [r_symndx
] = got_type
;
5515 case R_SH_TLS_LD_32
:
5516 sh_elf_hash_table(info
)->tls_ldm_got
.refcount
+= 1;
5520 case R_SH_GOTOFFFUNCDESC
:
5521 case R_SH_GOTOFFFUNCDESC20
:
5525 (_("%pB: Function descriptor relocation with non-zero addend"),
5532 union gotref
*local_funcdesc
;
5534 /* We need a function descriptor for a local symbol. */
5535 local_funcdesc
= sh_elf_local_funcdesc (abfd
);
5536 if (local_funcdesc
== NULL
)
5540 size
= symtab_hdr
->sh_info
* sizeof (union gotref
);
5541 local_funcdesc
= (union gotref
*) bfd_zalloc (abfd
, size
);
5542 if (local_funcdesc
== NULL
)
5544 sh_elf_local_funcdesc (abfd
) = local_funcdesc
;
5546 local_funcdesc
[r_symndx
].refcount
+= 1;
5548 if (r_type
== R_SH_FUNCDESC
)
5550 if (!bfd_link_pic (info
))
5551 htab
->srofixup
->size
+= 4;
5553 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
5558 sh_elf_hash_entry (h
)->funcdesc
.refcount
++;
5559 if (r_type
== R_SH_FUNCDESC
)
5560 sh_elf_hash_entry (h
)->abs_funcdesc_refcount
++;
5562 /* If there is a function descriptor reference, then
5563 there should not be any non-FDPIC references. */
5564 old_got_type
= sh_elf_hash_entry (h
)->got_type
;
5565 if (old_got_type
!= GOT_FUNCDESC
&& old_got_type
!= GOT_UNKNOWN
)
5567 if (old_got_type
== GOT_NORMAL
)
5569 /* xgettext:c-format */
5570 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5571 abfd
, h
->root
.root
.string
);
5574 /* xgettext:c-format */
5575 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5576 abfd
, h
->root
.root
.string
);
5582 /* If this is a local symbol, we resolve it directly without
5583 creating a procedure linkage table entry. */
5587 || ! bfd_link_pic (info
)
5589 || h
->dynindx
== -1)
5593 h
->plt
.refcount
+= 1;
5594 ((struct elf_sh_link_hash_entry
*) h
)->gotplt_refcount
+= 1;
5599 /* This symbol requires a procedure linkage table entry. We
5600 actually build the entry in adjust_dynamic_symbol,
5601 because this might be a case of linking PIC code which is
5602 never referenced by a dynamic object, in which case we
5603 don't need to generate a procedure linkage table entry
5606 /* If this is a local symbol, we resolve it directly without
5607 creating a procedure linkage table entry. */
5611 if (h
->forced_local
)
5615 h
->plt
.refcount
+= 1;
5620 if (h
!= NULL
&& ! bfd_link_pic (info
))
5623 h
->plt
.refcount
+= 1;
5626 /* If we are creating a shared library, and this is a reloc
5627 against a global symbol, or a non PC relative reloc
5628 against a local symbol, then we need to copy the reloc
5629 into the shared library. However, if we are linking with
5630 -Bsymbolic, we do not need to copy a reloc against a
5631 global symbol which is defined in an object we are
5632 including in the link (i.e., DEF_REGULAR is set). At
5633 this point we have not seen all the input files, so it is
5634 possible that DEF_REGULAR is not set now but will be set
5635 later (it is never cleared). We account for that
5636 possibility below by storing information in the
5637 dyn_relocs field of the hash table entry. A similar
5638 situation occurs when creating shared libraries and symbol
5639 visibility changes render the symbol local.
5641 If on the other hand, we are creating an executable, we
5642 may need to keep relocations for symbols satisfied by a
5643 dynamic library if we manage to avoid copy relocs for the
5645 if ((bfd_link_pic (info
)
5646 && (sec
->flags
& SEC_ALLOC
) != 0
5647 && (r_type
!= R_SH_REL32
5649 && (! info
->symbolic
5650 || h
->root
.type
== bfd_link_hash_defweak
5651 || !h
->def_regular
))))
5652 || (! bfd_link_pic (info
)
5653 && (sec
->flags
& SEC_ALLOC
) != 0
5655 && (h
->root
.type
== bfd_link_hash_defweak
5656 || !h
->def_regular
)))
5658 struct elf_dyn_relocs
*p
;
5659 struct elf_dyn_relocs
**head
;
5661 if (htab
->root
.dynobj
== NULL
)
5662 htab
->root
.dynobj
= abfd
;
5664 /* When creating a shared object, we must copy these
5665 reloc types into the output file. We create a reloc
5666 section in dynobj and make room for this reloc. */
5669 sreloc
= _bfd_elf_make_dynamic_reloc_section
5670 (sec
, htab
->root
.dynobj
, 2, abfd
, /*rela?*/ true);
5676 /* If this is a global symbol, we count the number of
5677 relocations we need for this symbol. */
5679 head
= &h
->dyn_relocs
;
5682 /* Track dynamic relocs needed for local syms too. */
5685 Elf_Internal_Sym
*isym
;
5687 isym
= bfd_sym_from_r_symndx (&htab
->root
.sym_cache
,
5692 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5696 vpp
= &elf_section_data (s
)->local_dynrel
;
5697 head
= (struct elf_dyn_relocs
**) vpp
;
5701 if (p
== NULL
|| p
->sec
!= sec
)
5703 size_t amt
= sizeof (*p
);
5704 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
5715 if (r_type
== R_SH_REL32
)
5719 /* Allocate the fixup regardless of whether we need a relocation.
5720 If we end up generating the relocation, we'll unallocate the
5722 if (htab
->fdpic_p
&& !bfd_link_pic (info
)
5723 && r_type
== R_SH_DIR32
5724 && (sec
->flags
& SEC_ALLOC
) != 0)
5725 htab
->srofixup
->size
+= 4;
5728 case R_SH_TLS_LE_32
:
5729 if (bfd_link_dll (info
))
5732 (_("%pB: TLS local exec code cannot be linked into shared objects"),
5739 case R_SH_TLS_LDO_32
:
5740 /* Nothing to do. */
5751 #ifndef sh_elf_set_mach_from_flags
5752 static unsigned int sh_ef_bfd_table
[] = { EF_SH_BFD_TABLE
};
5755 sh_elf_set_mach_from_flags (bfd
*abfd
)
5757 flagword flags
= elf_elfheader (abfd
)->e_flags
& EF_SH_MACH_MASK
;
5759 if (flags
>= ARRAY_SIZE (sh_ef_bfd_table
))
5762 if (sh_ef_bfd_table
[flags
] == 0)
5765 bfd_default_set_arch_mach (abfd
, bfd_arch_sh
, sh_ef_bfd_table
[flags
]);
5771 /* Reverse table lookup for sh_ef_bfd_table[].
5772 Given a bfd MACH value from archures.c
5773 return the equivalent ELF flags from the table.
5774 Return -1 if no match is found. */
5777 sh_elf_get_flags_from_mach (unsigned long mach
)
5779 int i
= ARRAY_SIZE (sh_ef_bfd_table
) - 1;
5782 if (sh_ef_bfd_table
[i
] == mach
)
5785 /* shouldn't get here */
5790 #endif /* not sh_elf_set_mach_from_flags */
5792 #ifndef sh_elf_copy_private_data
5793 /* Copy backend specific data from one object module to another */
5796 sh_elf_copy_private_data (bfd
* ibfd
, bfd
* obfd
)
5798 if (! is_sh_elf (ibfd
) || ! is_sh_elf (obfd
))
5801 if (! _bfd_elf_copy_private_bfd_data (ibfd
, obfd
))
5804 return sh_elf_set_mach_from_flags (obfd
);
5806 #endif /* not sh_elf_copy_private_data */
5808 #ifndef sh_elf_merge_private_data
5810 /* This function returns the ELF architecture number that
5811 corresponds to the given arch_sh* flags. */
5814 sh_find_elf_flags (unsigned int arch_set
)
5816 extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5817 unsigned long bfd_mach
= sh_get_bfd_mach_from_arch_set (arch_set
);
5819 return sh_elf_get_flags_from_mach (bfd_mach
);
5822 /* Merge the architecture type of two BFD files, such that the
5823 resultant architecture supports all the features required
5824 by the two input BFDs.
5825 If the input BFDs are multually incompatible - i.e. one uses
5826 DSP while the other uses FPU - or there is no known architecture
5827 that fits the requirements then an error is emitted. */
5830 sh_merge_bfd_arch (bfd
*ibfd
, struct bfd_link_info
*info
)
5832 bfd
*obfd
= info
->output_bfd
;
5833 unsigned int old_arch
, new_arch
, merged_arch
;
5835 if (! _bfd_generic_verify_endian_match (ibfd
, info
))
5838 old_arch
= sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd
));
5839 new_arch
= sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd
));
5841 merged_arch
= SH_MERGE_ARCH_SET (old_arch
, new_arch
);
5843 if (!SH_VALID_CO_ARCH_SET (merged_arch
))
5846 /* xgettext:c-format */
5847 (_("%pB: uses %s instructions while previous modules "
5848 "use %s instructions"),
5850 SH_ARCH_SET_HAS_DSP (new_arch
) ? "dsp" : "floating point",
5851 SH_ARCH_SET_HAS_DSP (new_arch
) ? "floating point" : "dsp");
5852 bfd_set_error (bfd_error_bad_value
);
5855 else if (!SH_VALID_ARCH_SET (merged_arch
))
5858 /* xgettext:c-format */
5859 (_("internal error: merge of architecture '%s' with "
5860 "architecture '%s' produced unknown architecture"),
5861 bfd_printable_name (obfd
),
5862 bfd_printable_name (ibfd
));
5863 bfd_set_error (bfd_error_bad_value
);
5867 bfd_default_set_arch_mach (obfd
, bfd_arch_sh
,
5868 sh_get_bfd_mach_from_arch_set (merged_arch
));
5873 /* This routine initialises the elf flags when required and
5874 calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */
5877 sh_elf_merge_private_data (bfd
*ibfd
, struct bfd_link_info
*info
)
5879 bfd
*obfd
= info
->output_bfd
;
5881 /* FIXME: What should be checked when linking shared libraries? */
5882 if ((ibfd
->flags
& DYNAMIC
) != 0)
5885 if (! is_sh_elf (ibfd
) || ! is_sh_elf (obfd
))
5888 if (! elf_flags_init (obfd
))
5890 /* This happens when ld starts out with a 'blank' output file. */
5891 elf_flags_init (obfd
) = true;
5892 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
5893 sh_elf_set_mach_from_flags (obfd
);
5894 if (elf_elfheader (obfd
)->e_flags
& EF_SH_FDPIC
)
5895 elf_elfheader (obfd
)->e_flags
&= ~EF_SH_PIC
;
5898 if (! sh_merge_bfd_arch (ibfd
, info
))
5900 _bfd_error_handler (_("%pB: uses instructions which are incompatible "
5901 "with instructions used in previous modules"),
5903 bfd_set_error (bfd_error_bad_value
);
5907 elf_elfheader (obfd
)->e_flags
&= ~EF_SH_MACH_MASK
;
5908 elf_elfheader (obfd
)->e_flags
|=
5909 sh_elf_get_flags_from_mach (bfd_get_mach (obfd
));
5911 if (fdpic_object_p (ibfd
) != fdpic_object_p (obfd
))
5913 _bfd_error_handler (_("%pB: attempt to mix FDPIC and non-FDPIC objects"),
5915 bfd_set_error (bfd_error_bad_value
);
5921 #endif /* not sh_elf_merge_private_data */
5923 /* Override the generic function because we need to store sh_elf_obj_tdata
5924 as the specific tdata. We set also the machine architecture from flags
5928 sh_elf_object_p (bfd
*abfd
)
5930 if (! sh_elf_set_mach_from_flags (abfd
))
5933 return (((elf_elfheader (abfd
)->e_flags
& EF_SH_FDPIC
) != 0)
5934 == fdpic_object_p (abfd
));
5937 /* Finish up dynamic symbol handling. We set the contents of various
5938 dynamic sections here. */
5941 sh_elf_finish_dynamic_symbol (bfd
*output_bfd
, struct bfd_link_info
*info
,
5942 struct elf_link_hash_entry
*h
,
5943 Elf_Internal_Sym
*sym
)
5945 struct elf_sh_link_hash_table
*htab
;
5947 htab
= sh_elf_hash_table (info
);
5951 if (h
->plt
.offset
!= (bfd_vma
) -1)
5959 Elf_Internal_Rela rel
;
5961 const struct elf_sh_plt_info
*plt_info
;
5963 /* This symbol has an entry in the procedure linkage table. Set
5966 BFD_ASSERT (h
->dynindx
!= -1);
5968 splt
= htab
->root
.splt
;
5969 sgotplt
= htab
->root
.sgotplt
;
5970 srelplt
= htab
->root
.srelplt
;
5971 BFD_ASSERT (splt
!= NULL
&& sgotplt
!= NULL
&& srelplt
!= NULL
);
5973 /* Get the index in the procedure linkage table which
5974 corresponds to this symbol. This is the index of this symbol
5975 in all the symbols for which we are making plt entries. The
5976 first entry in the procedure linkage table is reserved. */
5977 plt_index
= get_plt_index (htab
->plt_info
, h
->plt
.offset
);
5979 plt_info
= htab
->plt_info
;
5980 if (plt_info
->short_plt
!= NULL
&& plt_index
<= MAX_SHORT_PLT
)
5981 plt_info
= plt_info
->short_plt
;
5983 /* Get the offset into the .got table of the entry that
5984 corresponds to this function. */
5986 /* The offset must be relative to the GOT symbol, twelve bytes
5987 before the end of .got.plt. Each descriptor is eight
5989 got_offset
= plt_index
* 8 + 12 - sgotplt
->size
;
5991 /* Each .got entry is 4 bytes. The first three are
5993 got_offset
= (plt_index
+ 3) * 4;
5996 if (bfd_link_pic (info
))
5997 got_offset
-= GOT_BIAS
;
6000 /* Fill in the entry in the procedure linkage table. */
6001 memcpy (splt
->contents
+ h
->plt
.offset
,
6002 plt_info
->symbol_entry
,
6003 plt_info
->symbol_entry_size
);
6005 if (bfd_link_pic (info
) || htab
->fdpic_p
)
6007 if (plt_info
->symbol_fields
.got20
)
6009 bfd_reloc_status_type r
;
6010 r
= install_movi20_field (output_bfd
, got_offset
,
6011 splt
->owner
, splt
, splt
->contents
,
6013 + plt_info
->symbol_fields
.got_entry
);
6014 BFD_ASSERT (r
== bfd_reloc_ok
);
6017 install_plt_field (output_bfd
, false, got_offset
,
6020 + plt_info
->symbol_fields
.got_entry
));
6024 BFD_ASSERT (!plt_info
->symbol_fields
.got20
);
6026 install_plt_field (output_bfd
, false,
6027 (sgotplt
->output_section
->vma
6028 + sgotplt
->output_offset
6032 + plt_info
->symbol_fields
.got_entry
));
6033 if (htab
->root
.target_os
== is_vxworks
)
6035 unsigned int reachable_plts
, plts_per_4k
;
6038 /* Divide the PLT into groups. The first group contains
6039 REACHABLE_PLTS entries and the other groups contain
6040 PLTS_PER_4K entries. Entries in the first group can
6041 branch directly to .plt; those in later groups branch
6042 to the last element of the previous group. */
6043 /* ??? It would be better to create multiple copies of
6044 the common resolver stub. */
6045 reachable_plts
= ((4096
6046 - plt_info
->plt0_entry_size
6047 - (plt_info
->symbol_fields
.plt
+ 4))
6048 / plt_info
->symbol_entry_size
) + 1;
6049 plts_per_4k
= (4096 / plt_info
->symbol_entry_size
);
6050 if (plt_index
< reachable_plts
)
6051 distance
= -(h
->plt
.offset
6052 + plt_info
->symbol_fields
.plt
);
6054 distance
= -(((plt_index
- reachable_plts
) % plts_per_4k
+ 1)
6055 * plt_info
->symbol_entry_size
);
6057 /* Install the 'bra' with this offset. */
6058 bfd_put_16 (output_bfd
,
6059 0xa000 | (0x0fff & ((distance
- 4) / 2)),
6062 + plt_info
->symbol_fields
.plt
));
6065 install_plt_field (output_bfd
, true,
6066 splt
->output_section
->vma
+ splt
->output_offset
,
6069 + plt_info
->symbol_fields
.plt
));
6072 /* Make got_offset relative to the start of .got.plt. */
6074 if (bfd_link_pic (info
))
6075 got_offset
+= GOT_BIAS
;
6078 got_offset
= plt_index
* 8;
6080 if (plt_info
->symbol_fields
.reloc_offset
!= MINUS_ONE
)
6081 install_plt_field (output_bfd
, false,
6082 plt_index
* sizeof (Elf32_External_Rela
),
6085 + plt_info
->symbol_fields
.reloc_offset
));
6087 /* Fill in the entry in the global offset table. */
6088 bfd_put_32 (output_bfd
,
6089 (splt
->output_section
->vma
6090 + splt
->output_offset
6092 + plt_info
->symbol_resolve_offset
),
6093 sgotplt
->contents
+ got_offset
);
6095 bfd_put_32 (output_bfd
,
6096 sh_elf_osec_to_segment (output_bfd
, splt
->output_section
),
6097 sgotplt
->contents
+ got_offset
+ 4);
6099 /* Fill in the entry in the .rela.plt section. */
6100 rel
.r_offset
= (sgotplt
->output_section
->vma
6101 + sgotplt
->output_offset
6104 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_FUNCDESC_VALUE
);
6106 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_JMP_SLOT
);
6109 rel
.r_addend
= GOT_BIAS
;
6111 loc
= srelplt
->contents
+ plt_index
* sizeof (Elf32_External_Rela
);
6112 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6114 if (htab
->root
.target_os
== is_vxworks
&& !bfd_link_pic (info
))
6116 /* Create the .rela.plt.unloaded relocations for this PLT entry.
6117 Begin by pointing LOC to the first such relocation. */
6118 loc
= (htab
->srelplt2
->contents
6119 + (plt_index
* 2 + 1) * sizeof (Elf32_External_Rela
));
6121 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
6122 for the PLT entry's pointer to the .got.plt entry. */
6123 rel
.r_offset
= (splt
->output_section
->vma
6124 + splt
->output_offset
6126 + plt_info
->symbol_fields
.got_entry
);
6127 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_SH_DIR32
);
6128 rel
.r_addend
= got_offset
;
6129 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6130 loc
+= sizeof (Elf32_External_Rela
);
6132 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
6133 the .got.plt entry, which initially points to .plt. */
6134 rel
.r_offset
= (sgotplt
->output_section
->vma
6135 + sgotplt
->output_offset
6137 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_SH_DIR32
);
6139 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
6142 if (!h
->def_regular
)
6144 /* Mark the symbol as undefined, rather than as defined in
6145 the .plt section. Leave the value alone. */
6146 sym
->st_shndx
= SHN_UNDEF
;
6150 if (h
->got
.offset
!= (bfd_vma
) -1
6151 && sh_elf_hash_entry (h
)->got_type
!= GOT_TLS_GD
6152 && sh_elf_hash_entry (h
)->got_type
!= GOT_TLS_IE
6153 && sh_elf_hash_entry (h
)->got_type
!= GOT_FUNCDESC
)
6157 Elf_Internal_Rela rel
;
6160 /* This symbol has an entry in the global offset table. Set it
6163 sgot
= htab
->root
.sgot
;
6164 srelgot
= htab
->root
.srelgot
;
6165 BFD_ASSERT (sgot
!= NULL
&& srelgot
!= NULL
);
6167 rel
.r_offset
= (sgot
->output_section
->vma
6168 + sgot
->output_offset
6169 + (h
->got
.offset
&~ (bfd_vma
) 1));
6171 /* If this is a static link, or it is a -Bsymbolic link and the
6172 symbol is defined locally or was forced to be local because
6173 of a version file, we just want to emit a RELATIVE reloc.
6174 The entry in the global offset table will already have been
6175 initialized in the relocate_section function. */
6176 if (bfd_link_pic (info
)
6177 && (h
->root
.type
== bfd_link_hash_defined
6178 || h
->root
.type
== bfd_link_hash_defweak
)
6179 && SYMBOL_REFERENCES_LOCAL (info
, h
))
6183 asection
*sec
= h
->root
.u
.def
.section
;
6185 = elf_section_data (sec
->output_section
)->dynindx
;
6187 rel
.r_info
= ELF32_R_INFO (dynindx
, R_SH_DIR32
);
6188 rel
.r_addend
= (h
->root
.u
.def
.value
6189 + h
->root
.u
.def
.section
->output_offset
);
6193 rel
.r_info
= ELF32_R_INFO (0, R_SH_RELATIVE
);
6194 rel
.r_addend
= (h
->root
.u
.def
.value
6195 + h
->root
.u
.def
.section
->output_section
->vma
6196 + h
->root
.u
.def
.section
->output_offset
);
6201 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
6202 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_GLOB_DAT
);
6206 loc
= srelgot
->contents
;
6207 loc
+= srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
6208 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6214 Elf_Internal_Rela rel
;
6217 /* This symbol needs a copy reloc. Set it up. */
6219 BFD_ASSERT (h
->dynindx
!= -1
6220 && (h
->root
.type
== bfd_link_hash_defined
6221 || h
->root
.type
== bfd_link_hash_defweak
));
6223 s
= bfd_get_linker_section (htab
->root
.dynobj
, ".rela.bss");
6224 BFD_ASSERT (s
!= NULL
);
6226 rel
.r_offset
= (h
->root
.u
.def
.value
6227 + h
->root
.u
.def
.section
->output_section
->vma
6228 + h
->root
.u
.def
.section
->output_offset
);
6229 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_SH_COPY
);
6231 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
6232 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6235 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
6236 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
6238 if (h
== htab
->root
.hdynamic
6239 || (htab
->root
.target_os
!= is_vxworks
&& h
== htab
->root
.hgot
))
6240 sym
->st_shndx
= SHN_ABS
;
6245 /* Finish up the dynamic sections. */
6248 sh_elf_finish_dynamic_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
6250 struct elf_sh_link_hash_table
*htab
;
6254 htab
= sh_elf_hash_table (info
);
6258 sgotplt
= htab
->root
.sgotplt
;
6259 sdyn
= bfd_get_linker_section (htab
->root
.dynobj
, ".dynamic");
6261 if (htab
->root
.dynamic_sections_created
)
6264 Elf32_External_Dyn
*dyncon
, *dynconend
;
6266 BFD_ASSERT (sgotplt
!= NULL
&& sdyn
!= NULL
);
6268 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
6269 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
6270 for (; dyncon
< dynconend
; dyncon
++)
6272 Elf_Internal_Dyn dyn
;
6275 bfd_elf32_swap_dyn_in (htab
->root
.dynobj
, dyncon
, &dyn
);
6280 if (htab
->root
.target_os
== is_vxworks
6281 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
6282 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
6286 BFD_ASSERT (htab
->root
.hgot
!= NULL
);
6287 s
= htab
->root
.hgot
->root
.u
.def
.section
;
6288 dyn
.d_un
.d_ptr
= htab
->root
.hgot
->root
.u
.def
.value
6289 + s
->output_section
->vma
+ s
->output_offset
;
6290 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
6294 s
= htab
->root
.srelplt
;
6295 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
6296 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
6300 s
= htab
->root
.srelplt
;
6301 dyn
.d_un
.d_val
= s
->size
;
6302 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
6307 /* Fill in the first entry in the procedure linkage table. */
6308 splt
= htab
->root
.splt
;
6309 if (splt
&& splt
->size
> 0 && htab
->plt_info
->plt0_entry
)
6313 memcpy (splt
->contents
,
6314 htab
->plt_info
->plt0_entry
,
6315 htab
->plt_info
->plt0_entry_size
);
6316 for (i
= 0; i
< ARRAY_SIZE (htab
->plt_info
->plt0_got_fields
); i
++)
6317 if (htab
->plt_info
->plt0_got_fields
[i
] != MINUS_ONE
)
6318 install_plt_field (output_bfd
, false,
6319 (sgotplt
->output_section
->vma
6320 + sgotplt
->output_offset
6323 + htab
->plt_info
->plt0_got_fields
[i
]));
6325 if (htab
->root
.target_os
== is_vxworks
)
6327 /* Finalize the .rela.plt.unloaded contents. */
6328 Elf_Internal_Rela rel
;
6331 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
6332 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */
6333 loc
= htab
->srelplt2
->contents
;
6334 rel
.r_offset
= (splt
->output_section
->vma
6335 + splt
->output_offset
6336 + htab
->plt_info
->plt0_got_fields
[2]);
6337 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_SH_DIR32
);
6339 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
6340 loc
+= sizeof (Elf32_External_Rela
);
6342 /* Fix up the remaining .rela.plt.unloaded relocations.
6343 They may have the wrong symbol index for _G_O_T_ or
6344 _P_L_T_ depending on the order in which symbols were
6346 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
6348 /* The PLT entry's pointer to the .got.plt slot. */
6349 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
6350 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
,
6352 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
6353 loc
+= sizeof (Elf32_External_Rela
);
6355 /* The .got.plt slot's pointer to .plt. */
6356 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
6357 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
,
6359 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
6360 loc
+= sizeof (Elf32_External_Rela
);
6364 /* UnixWare sets the entsize of .plt to 4, although that doesn't
6365 really seem like the right value. */
6366 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
6370 /* Fill in the first three entries in the global offset table. */
6371 if (sgotplt
&& sgotplt
->size
> 0 && !htab
->fdpic_p
)
6374 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgotplt
->contents
);
6376 bfd_put_32 (output_bfd
,
6377 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
6379 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgotplt
->contents
+ 4);
6380 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgotplt
->contents
+ 8);
6383 if (sgotplt
&& sgotplt
->size
> 0)
6384 elf_section_data (sgotplt
->output_section
)->this_hdr
.sh_entsize
= 4;
6386 /* At the very end of the .rofixup section is a pointer to the GOT. */
6387 if (htab
->fdpic_p
&& htab
->srofixup
!= NULL
)
6389 struct elf_link_hash_entry
*hgot
= htab
->root
.hgot
;
6390 bfd_vma got_value
= hgot
->root
.u
.def
.value
6391 + hgot
->root
.u
.def
.section
->output_section
->vma
6392 + hgot
->root
.u
.def
.section
->output_offset
;
6394 sh_elf_add_rofixup (output_bfd
, htab
->srofixup
, got_value
);
6396 /* Make sure we allocated and generated the same number of fixups. */
6397 BFD_ASSERT (htab
->srofixup
->reloc_count
* 4 == htab
->srofixup
->size
);
6400 if (htab
->srelfuncdesc
)
6401 BFD_ASSERT (htab
->srelfuncdesc
->reloc_count
* sizeof (Elf32_External_Rela
)
6402 == htab
->srelfuncdesc
->size
);
6404 if (htab
->root
.srelgot
)
6405 BFD_ASSERT (htab
->root
.srelgot
->reloc_count
* sizeof (Elf32_External_Rela
)
6406 == htab
->root
.srelgot
->size
);
6411 static enum elf_reloc_type_class
6412 sh_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
6413 const asection
*rel_sec ATTRIBUTE_UNUSED
,
6414 const Elf_Internal_Rela
*rela
)
6416 switch ((int) ELF32_R_TYPE (rela
->r_info
))
6419 return reloc_class_relative
;
6421 return reloc_class_plt
;
6423 return reloc_class_copy
;
6425 return reloc_class_normal
;
6429 #if !defined SH_TARGET_ALREADY_DEFINED
6430 /* Support for Linux core dump NOTE sections. */
6433 elf32_shlin_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
6438 switch (note
->descsz
)
6443 case 168: /* Linux/SH */
6445 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
6448 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
6457 /* Make a ".reg/999" section. */
6458 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
6459 size
, note
->descpos
+ offset
);
6463 elf32_shlin_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
6465 switch (note
->descsz
)
6470 case 124: /* Linux/SH elf_prpsinfo */
6471 elf_tdata (abfd
)->core
->program
6472 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
6473 elf_tdata (abfd
)->core
->command
6474 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
6477 /* Note that for some reason, a spurious space is tacked
6478 onto the end of the args in some (at least one anyway)
6479 implementations, so strip it off if it exists. */
6482 char *command
= elf_tdata (abfd
)->core
->command
;
6483 int n
= strlen (command
);
6485 if (0 < n
&& command
[n
- 1] == ' ')
6486 command
[n
- 1] = '\0';
6491 #endif /* not SH_TARGET_ALREADY_DEFINED */
6494 /* Return address for Ith PLT stub in section PLT, for relocation REL
6495 or (bfd_vma) -1 if it should not be included. */
6498 sh_elf_plt_sym_val (bfd_vma i
, const asection
*plt
,
6499 const arelent
*rel ATTRIBUTE_UNUSED
)
6501 const struct elf_sh_plt_info
*plt_info
;
6503 plt_info
= get_plt_info (plt
->owner
, (plt
->owner
->flags
& DYNAMIC
) != 0);
6504 return plt
->vma
+ get_plt_offset (plt_info
, i
);
6507 /* Decide whether to attempt to turn absptr or lsda encodings in
6508 shared libraries into pcrel within the given input section. */
6511 sh_elf_use_relative_eh_frame (bfd
*input_bfd ATTRIBUTE_UNUSED
,
6512 struct bfd_link_info
*info
,
6513 asection
*eh_frame_section ATTRIBUTE_UNUSED
)
6515 struct elf_sh_link_hash_table
*htab
= sh_elf_hash_table (info
);
6517 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
6524 /* Adjust the contents of an eh_frame_hdr section before they're output. */
6527 sh_elf_encode_eh_address (bfd
*abfd
,
6528 struct bfd_link_info
*info
,
6529 asection
*osec
, bfd_vma offset
,
6530 asection
*loc_sec
, bfd_vma loc_offset
,
6533 struct elf_sh_link_hash_table
*htab
= sh_elf_hash_table (info
);
6534 struct elf_link_hash_entry
*h
;
6537 return _bfd_elf_encode_eh_address (abfd
, info
, osec
, offset
, loc_sec
,
6538 loc_offset
, encoded
);
6540 h
= htab
->root
.hgot
;
6541 BFD_ASSERT (h
&& h
->root
.type
== bfd_link_hash_defined
);
6543 if (! h
|| (sh_elf_osec_to_segment (abfd
, osec
)
6544 == sh_elf_osec_to_segment (abfd
, loc_sec
->output_section
)))
6545 return _bfd_elf_encode_eh_address (abfd
, info
, osec
, offset
,
6546 loc_sec
, loc_offset
, encoded
);
6548 BFD_ASSERT (sh_elf_osec_to_segment (abfd
, osec
)
6549 == (sh_elf_osec_to_segment
6550 (abfd
, h
->root
.u
.def
.section
->output_section
)));
6552 *encoded
= osec
->vma
+ offset
6553 - (h
->root
.u
.def
.value
6554 + h
->root
.u
.def
.section
->output_section
->vma
6555 + h
->root
.u
.def
.section
->output_offset
);
6557 return DW_EH_PE_datarel
| DW_EH_PE_sdata4
;
6560 #if !defined SH_TARGET_ALREADY_DEFINED
6561 #define TARGET_BIG_SYM sh_elf32_vec
6562 #define TARGET_BIG_NAME "elf32-sh"
6563 #define TARGET_LITTLE_SYM sh_elf32_le_vec
6564 #define TARGET_LITTLE_NAME "elf32-shl"
6567 #define ELF_ARCH bfd_arch_sh
6568 #define ELF_TARGET_ID SH_ELF_DATA
6569 #define ELF_MACHINE_CODE EM_SH
6570 #ifdef __QNXTARGET__
6571 #define ELF_MAXPAGESIZE 0x1000
6573 #define ELF_MAXPAGESIZE 0x80
6576 #define elf_symbol_leading_char '_'
6578 #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6579 #define bfd_elf32_bfd_reloc_name_lookup \
6580 sh_elf_reloc_name_lookup
6581 #define elf_info_to_howto sh_elf_info_to_howto
6582 #define bfd_elf32_bfd_relax_section sh_elf_relax_section
6583 #define elf_backend_relocate_section sh_elf_relocate_section
6584 #define bfd_elf32_bfd_get_relocated_section_contents \
6585 sh_elf_get_relocated_section_contents
6586 #define bfd_elf32_mkobject sh_elf_mkobject
6587 #define elf_backend_object_p sh_elf_object_p
6588 #define bfd_elf32_bfd_copy_private_bfd_data \
6589 sh_elf_copy_private_data
6590 #define bfd_elf32_bfd_merge_private_bfd_data \
6591 sh_elf_merge_private_data
6593 #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook
6594 #define elf_backend_check_relocs sh_elf_check_relocs
6595 #define elf_backend_copy_indirect_symbol \
6596 sh_elf_copy_indirect_symbol
6597 #define elf_backend_create_dynamic_sections \
6598 sh_elf_create_dynamic_sections
6599 #define bfd_elf32_bfd_link_hash_table_create \
6600 sh_elf_link_hash_table_create
6601 #define elf_backend_adjust_dynamic_symbol \
6602 sh_elf_adjust_dynamic_symbol
6603 #define elf_backend_always_size_sections \
6604 sh_elf_always_size_sections
6605 #define elf_backend_size_dynamic_sections \
6606 sh_elf_size_dynamic_sections
6607 #define elf_backend_omit_section_dynsym sh_elf_omit_section_dynsym
6608 #define elf_backend_finish_dynamic_symbol \
6609 sh_elf_finish_dynamic_symbol
6610 #define elf_backend_finish_dynamic_sections \
6611 sh_elf_finish_dynamic_sections
6612 #define elf_backend_reloc_type_class sh_elf_reloc_type_class
6613 #define elf_backend_plt_sym_val sh_elf_plt_sym_val
6614 #define elf_backend_can_make_relative_eh_frame \
6615 sh_elf_use_relative_eh_frame
6616 #define elf_backend_can_make_lsda_relative_eh_frame \
6617 sh_elf_use_relative_eh_frame
6618 #define elf_backend_encode_eh_address \
6619 sh_elf_encode_eh_address
6621 #define elf_backend_stack_align 8
6622 #define elf_backend_can_gc_sections 1
6623 #define elf_backend_can_refcount 1
6624 #define elf_backend_want_got_plt 1
6625 #define elf_backend_plt_readonly 1
6626 #define elf_backend_want_plt_sym 0
6627 #define elf_backend_got_header_size 12
6628 #define elf_backend_dtrel_excludes_plt 1
6630 #define elf_backend_linux_prpsinfo32_ugid16 true
6632 #if !defined SH_TARGET_ALREADY_DEFINED
6634 #include "elf32-target.h"
6636 /* NetBSD support. */
6637 #undef TARGET_BIG_SYM
6638 #define TARGET_BIG_SYM sh_elf32_nbsd_vec
6639 #undef TARGET_BIG_NAME
6640 #define TARGET_BIG_NAME "elf32-sh-nbsd"
6641 #undef TARGET_LITTLE_SYM
6642 #define TARGET_LITTLE_SYM sh_elf32_nbsd_le_vec
6643 #undef TARGET_LITTLE_NAME
6644 #define TARGET_LITTLE_NAME "elf32-shl-nbsd"
6645 #undef ELF_MAXPAGESIZE
6646 #define ELF_MAXPAGESIZE 0x10000
6647 #undef ELF_COMMONPAGESIZE
6648 #undef elf_symbol_leading_char
6649 #define elf_symbol_leading_char 0
6651 #define elf32_bed elf32_sh_nbsd_bed
6653 #include "elf32-target.h"
6656 /* Linux support. */
6657 #undef TARGET_BIG_SYM
6658 #define TARGET_BIG_SYM sh_elf32_linux_be_vec
6659 #undef TARGET_BIG_NAME
6660 #define TARGET_BIG_NAME "elf32-shbig-linux"
6661 #undef TARGET_LITTLE_SYM
6662 #define TARGET_LITTLE_SYM sh_elf32_linux_vec
6663 #undef TARGET_LITTLE_NAME
6664 #define TARGET_LITTLE_NAME "elf32-sh-linux"
6665 #undef ELF_COMMONPAGESIZE
6666 #define ELF_COMMONPAGESIZE 0x1000
6668 #undef elf_backend_grok_prstatus
6669 #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus
6670 #undef elf_backend_grok_psinfo
6671 #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo
6673 #define elf32_bed elf32_sh_lin_bed
6675 #include "elf32-target.h"
6678 /* FDPIC support. */
6679 #undef TARGET_BIG_SYM
6680 #define TARGET_BIG_SYM sh_elf32_fdpic_be_vec
6681 #undef TARGET_BIG_NAME
6682 #define TARGET_BIG_NAME "elf32-shbig-fdpic"
6683 #undef TARGET_LITTLE_SYM
6684 #define TARGET_LITTLE_SYM sh_elf32_fdpic_le_vec
6685 #undef TARGET_LITTLE_NAME
6686 #define TARGET_LITTLE_NAME "elf32-sh-fdpic"
6689 #define elf32_bed elf32_sh_fd_bed
6691 #include "elf32-target.h"
6693 /* VxWorks support. */
6694 #undef TARGET_BIG_SYM
6695 #define TARGET_BIG_SYM sh_elf32_vxworks_vec
6696 #undef TARGET_BIG_NAME
6697 #define TARGET_BIG_NAME "elf32-sh-vxworks"
6698 #undef TARGET_LITTLE_SYM
6699 #define TARGET_LITTLE_SYM sh_elf32_vxworks_le_vec
6700 #undef TARGET_LITTLE_NAME
6701 #define TARGET_LITTLE_NAME "elf32-shl-vxworks"
6703 #define elf32_bed elf32_sh_vxworks_bed
6705 #undef elf_backend_want_plt_sym
6706 #define elf_backend_want_plt_sym 1
6707 #undef elf_symbol_leading_char
6708 #define elf_symbol_leading_char '_'
6709 #define elf_backend_want_got_underscore 1
6710 #undef elf_backend_grok_prstatus
6711 #undef elf_backend_grok_psinfo
6712 #undef elf_backend_add_symbol_hook
6713 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
6714 #undef elf_backend_link_output_symbol_hook
6715 #define elf_backend_link_output_symbol_hook \
6716 elf_vxworks_link_output_symbol_hook
6717 #undef elf_backend_emit_relocs
6718 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
6719 #undef elf_backend_final_write_processing
6720 #define elf_backend_final_write_processing \
6721 elf_vxworks_final_write_processing
6722 #undef ELF_MAXPAGESIZE
6723 #define ELF_MAXPAGESIZE 0x1000
6724 #undef ELF_COMMONPAGESIZE
6726 #undef ELF_TARGET_OS
6727 #define ELF_TARGET_OS is_vxworks
6729 #include "elf32-target.h"
6731 #endif /* not SH_TARGET_ALREADY_DEFINED */